293 – Roman Emperors Diocletian and Maximian appoint Galerius as Caesar to Diocletian, beginning the period of four rulers known as the Tetrarchy.
878 – Syracuse, Sicily, is captured by the Muslim Aghlabids after a nine-month siege.
879 – Pope John VIII gives blessings to Branimir of Croatia and to the Croatian people, considered to be international recognition of the Croatian state.
996 – Sixteen-year-old Otto III is crowned Holy Roman Emperor.
1349 – Dušan’s Code, the constitution of the Serbian Empire, is enacted by Dušan the Mighty.
1403 – Henry III of Castile sends Ruy González de Clavijo as ambassador to Timur to discuss the possibility of an alliance between Timur and Castile against the Ottoman Empire.
1554 – Queen Mary I grants a royal charter to Derby School, as a grammar school for boys in Derby, England.
1659 – In the Concert of The Hague, the Dutch Republic, the Commonwealth of England and the Kingdom of France set out their views on how the Second Northern War should end.
1660 – The Battle of Long Sault concludes after five days in which French colonial militia, with their Huron and Algonquin allies, are defeated by the Iroquois Confederacy.
1674 – The nobility elect John Sobieski King of Poland and Grand Duke of Lithuania.
1703 – Daniel Defoe is imprisoned on charges of seditious libel.
1725 – The Order of St. Alexander Nevsky is instituted in Russia by Empress Catherine I. It would later be discontinued and then reinstated by the Soviet government in 1942 as the Order of Alexander Nevsky.
1758 – Ten-year-old Mary Campbell is abducted in Pennsylvania by Lenape during the French and Indian War. She is returned six and a half years later.
1792 – A lava dome collapses on Mount Unzen, near the city of Shimbara on the Japanese island of Kyūshū, creating a deadly tsunami that kills nearly 15,000 people.
1809 – The first day of the Battle of Aspern-Essling between the Austrian army led by Archduke Charles and the French army led by Napoleon I of France sees the French attack across the Danube held.
1851 – Slavery in Colombia is abolished.
1856 – Lawrence, Kansas is captured and burned by pro-slavery forces.
1863 – American Civil War: The Union Army succeeds in closing off the last escape route from Port Hudson, Louisiana, in preparation for the coming siege.
1864 – Russia declares an end to the Russo-Circassian War and many Circassians are forced into exile. The day is designated the Circassian Day of Mourning.
1864 – American Civil War: The Battle of Spotsylvania Court House ends.
1864 – The Ionian Islands reunite with Greece.
1871 – French troops invade the Paris Commune and engage its residents in street fighting. By the close of “Bloody Week”, some 20,000 communards have been killed and 38,000 arrested.
1871 – Opening of the first rack railway in Europe, the Rigi Bahnen on Mount Rigi.
1879 – War of the Pacific: Two Chilean ships blocking the harbor of Iquique (then belonging to Peru) battle two Peruvian vessels in the Battle of Iquique.
1881 – The American Red Cross is established by Clara Barton in Washington, D.C.
1894 – The Manchester Ship Canal in the United Kingdom is officially opened by Queen Victoria, who later knights its designer Sir Edward Leader Williams.
1904 – The Fédération Internationale de Football Association (FIFA) is founded in Paris.
1911 – President of Mexico Porfirio Díaz and the revolutionary Francisco Madero sign the Treaty of Ciudad Juárez to put an end to the fighting between the forces of both men, concluding the initial phase of the Mexican Revolution.
1917 – The Imperial War Graves Commission is established through royal charter to mark, record, and maintain the graves and places of commemoration of the British Empire’s military forces.
1917 – The Great Atlanta fire of 1917 causes $5.5 million in damages, destroying some 300 acres including 2,000 homes, businesses and churches, displacing about 10,000 people but leading to only one fatality (due to heart attack).
1924 – University of Chicago students Richard Loeb and Nathan Leopold, Jr. murder 14-year-old Bobby Franks in a “thrill killing”.
1927 – Charles Lindbergh touches down at Le Bourget Field in Paris, completing the world’s first solo nonstop flight across the Atlantic Ocean.
1932 – Bad weather forces Amelia Earhart to land in a pasture in Derry, Northern Ireland, and she thereby becomes the first woman to fly solo across the Atlantic Ocean.
1934 – Oskaloosa, Iowa, becomes the first municipality in the United States to fingerprint all of its citizens.
1936 – Sada Abe is arrested after wandering the streets of Tokyo for days with her dead lover’s severed genitals in her handbag. Her story soon becomes one of Japan’s most notorious scandals.
1937 – A Soviet station, North Pole-1, becomes the first scientific research settlement to operate on the drift ice of the Arctic Ocean.
1939 – The Canadian National War Memorial is unveiled by King George VI and Queen Elizabeth in Ottawa, Ontario, Canada.
1946 – Physicist Louis Slotin is fatally irradiated in a criticality incident during an experiment with the demon core at Los Alamos National Laboratory.
1951 – The opening of the Ninth Street Show, otherwise known as the 9th Street Art Exhibition: A gathering of a number of notable artists, and the stepping-out of the post war New York avant-garde, collectively known as the New York School.
1961 – American civil rights movement: Alabama Governor John Malcolm Patterson declares martial law in an attempt to restore order after race riots break out.
1966 – The Ulster Volunteer Force declares war on the Irish Republican Army in Northern Ireland.
1969 – Civil unrest in Rosario, Argentina, known as Rosariazo, following the death of a 15-year-old student.
1972 – Michelangelo’s Pietà in St. Peter’s Basilica in Rome is damaged by a vandal, the mentally disturbed Hungarian geologist Laszlo Toth.
1976 – Twenty-nine people are killed in the Yuba City bus disaster in Martinez, California.
1979 – White Night riots in San Francisco following the manslaughter conviction of Dan White for the assassinations of George Moscone and Harvey Milk.
1981 – The Italian government releases the membership list of Propaganda Due, an illegal pseudo-Masonic lodge that was implicated in numerous Italian crimes and mysteries.
1981 – Transamerica Corporation agrees to sell United Artists to Metro-Goldwyn-Mayer for $380 million after the box office failure of the 1980 film Heaven’s Gate.
1982 – Falklands War: A British amphibious assault during Operation Sutton leads to the Battle of San Carlos.
1991 – Former Indian Prime Minister Rajiv Gandhi is assassinated by a female suicide bomber near Madras.
1991 – Mengistu Haile Mariam, president of the People’s Democratic Republic of Ethiopia, flees Ethiopia, effectively bringing the Ethiopian Civil War to an end.
1992 – After 30 seasons Johnny Carson hosted his penultimate episode and last featuring guests (Robin Williams and Bette Midler) of The Tonight Show.
1994 – The Democratic Republic of Yemen unsuccessfully attempts to secede from the Republic of Yemen; a war breaks out.
1996 – The ferry MV Bukoba sinks in Tanzanian waters on Lake Victoria, killing nearly 1,000.
1998 – In Miami, five abortion clinics are attacked by a butyric acid attacker.
1998 – President Suharto of Indonesia resigns following the killing of students from Trisakti University earlier that week by security forces and growing mass protests in Jakarta against his ongoing corrupt rule.
2001 – French Taubira law is enacted, officially recognizing the Atlantic slave trade and slavery as crimes against humanity.
2003 – The 6.8 Mw Boumerdès earthquake shakes northern Algeria with a maximum Mercalli intensity of X (Extreme). More than 2,200 people were killed and a moderate tsunami sank boats at the Balearic Islands.
2005 – The tallest roller coaster in the world, Kingda Ka opens at Six Flags Great Adventure in Jackson Township, New Jersey.
2006 – The Republic of Montenegro holds a referendum proposing independence from the State Union of Serbia and Montenegro; 55% of Montenegrins vote for independence.
2010 – JAXA, the Japan Aerospace Exploration Agency, launches the solar-sail spacecraft IKAROS aboard an H-IIA rocket. The vessel would make a Venus flyby late in the year.
2011 – Radio broadcaster Harold Camping predicted that the world would end on this date.
2012 – A bus accident near Himara, Albania kills 13 people and injures 21 others.
2012 – A suicide bombing kills more than 120 people in Sana’a, Yemen.
2017 – Ringling Bros. and Barnum & Bailey Circus performed their final show at Nassau Veterans Memorial Coliseum.
Births on May 21
1471 – Albrecht Dürer, German painter, engraver, and mathematician (d. 1528)
1497 – Al-Hattab, Muslim jurist (d. 1547)
1527 – Philip II of Spain (d. 1598)
1653 – Eleonore of Austria, Queen of Poland (d. 1697)
1688 – Alexander Pope, English poet, essayist, and translator (d. 1744)
1755 – Alfred Moore, American lawyer and judge (d. 1810)
1756 – William Babington, Irish-born, English physician and mineralogist (d. 1833)
1763 – Joseph Fouché, French lawyer and politician (d. 1820)
1775 – Lucien Bonaparte, French soldier and politician (d. 1840)
1780 – Elizabeth Fry, English prison reformer, philanthropist and Quaker (d. 1845)
1790 – William Cavendish, 6th Duke of Devonshire, English politician, Lord Chamberlain of the Household (d. 1858)
1792 – Gaspard-Gustave de Coriolis, French mathematician and engineer (d. 1843)
1799 – Mary Anning, English paleontologist (d. 1847)
1801 – Princess Sophie of Sweden, Swedish princess (d. 1865)
1806 – Harriet Sutherland-Leveson-Gower, Duchess of Sutherland, English duchess (d. 1868)
1808 – David de Jahacob Lopez Cardozo, Dutch Talmudist (d. 1890)
1827 – William P. Sprague, American banker and politician (d. 1899)
1828 – Rudolf Koller, Swiss painter (d. 1905)
1835 – František Chvostek, Czech-Austrian physician and academic (d. 1884)
1837 – Itagaki Taisuke, Japanese soldier and politician (d. 1919)
1843 – Charles Albert Gobat, Swiss lawyer and politician, and Nobel Prize laureate (d. 1914)
1843 – Louis Renault, French jurist, educator, and Nobel Prize laureate (d. 1918)
1844 – Henri Rousseau, French painter (d. 1910)
1850 – Giuseppe Mercalli, Italian priest and volcanologist (d. 1914)
1851 – Léon Bourgeois, French police officer and politician, 64th Prime Minister of France, Nobel Prize laureate (d. 1925)
1853 – Jacques Marie Eugène Godefroy Cavaignac, French politician (d. 1905)
1856 – José Batlle y Ordóñez, Uruguayan journalist and politician, President of Uruguay (d. 1929)
1860 – Willem Einthoven, Indonesian-Dutch physician, physiologist, and academic, Nobel Prize laureate (d. 1927)
1861 – Abel Ayerza, Argentinian physician and academic (d. 1918)
1863 – Archduke Eugen of Austria (d. 1954)
1864 – Princess Stéphanie of Belgium (d. 1945)
1873 – Hans Berger, German neurologist and academic (d. 1941)
1878 – Glenn Curtiss, American cyclist and engineer (d. 1930)
1880 – Tudor Arghezi, Romanian journalist, author, and poet (d. 1967)
1884 – Manuel Pérez y Curis, Uruguayan poet and publisher (d. 1920)
1885 – Princess Sophie of Albania, (Princess Sophie of Schönburg-Waldenburg) (d. 1936)
1893 – Arthur Carr, English cricketer (d. 1963)
1893 – Giles Chippindall, Australian public servant (d. 1969)
1895 – Lázaro Cárdenas, Mexican general, president (1934–1940) and father of Cuauhtémoc Cárdenas (d. 1970)
1898 – Armand Hammer, American physician and businessman, founded Occidental Petroleum (d. 1990)
1898 – Charles Léon Hammes, Luxembourgian lawyer and judge (d. 1967)
1898 – Carl Johnson, American long jumper (d. 1932)
1898 – John McLaughlin, American painter and translator (d. 1976)
1901 – Regina M. Anderson, Multiracial playwright and librarian (d. 1993)
1901 – Horace Heidt, American pianist, bandleader, and radio host (d. 1986)
1901 – Sam Jaffe, American film producer and agent (d. 2000)
1901 – Suzanne Lilar, Belgian author and playwright (d. 1992)
1902 – Earl Averill, American baseball player (d. 1983)
1902 – Marcel Breuer, Hungarian-American architect and academic, designed the Ameritrust Tower (d. 1981)
1902 – Anatole Litvak, Ukrainian-American director, producer, and screenwriter (d. 1974)
1903 – Manly Wade Wellman, American author (d. 1986)
1904 – Robert Montgomery, American actor and director (d. 1981)
1904 – Fats Waller, American singer-songwriter and pianist (d. 1943)
1907 – John C. Allen, American roller coaster designer (d. 1979)
1912 – Chen Dayu, Chinese painter and calligrapher (d. 2001)
1912 – John Curtis Gowan, American psychologist and academic (d. 1986)
1912 – Monty Stratton, American baseball player and coach (d. 1982)
1913 – Gina Bachauer, Greek pianist and composer (d. 1976)
1915 – Cathleen Cordell, American actress (d. 1997)
1915 – Chakravarthi V. Narasimhan, Indian Civil Service Officer and former Under Secretary-General of the UN (d. 2003)
1916 – Dennis Day, American singer and actor (d. 1988)
1916 – Tinus Osendarp, Dutch sprinter and police officer (d. 2002)
1916 – Harold Robbins, American author and screenwriter (d. 1997)
1917 – Raymond Burr, Canadian-American actor and director (d. 1993)
1918 – Anthony Steel, English actor and singer (d. 2001)
1919 – George P. Mitchell, American businessman and philanthropist (d. 2013)
1920 – Bill Barber, American tuba player and educator (d. 2007)
1920 – Forrest White, American businessman, co-founded the Music Man Company (d. 1994)
1921 – Sandy Douglas, English computer scientist and academic, designed OXO (d. 2010)
1921 – Andrei Sakharov, Russian physicist and academic, Nobel Prize laureate (d. 1989)
1923 – Vernon Biever, American photographer (d. 2010)
1923 – Armand Borel, Swiss-American mathematician and academic (d. 2003)
1923 – Ara Parseghian, American football player and coach (d. 2017)
1923 – Dorothy Hewett, Australian feminist poet, novelist and playwright (d. 2002)
1923 – Evelyn Ward, American actress (d. 2012)
1924 – Peggy Cass, American actress, comedian, and game show panelist (d. 1999)
1926 – Robert Creeley, American novelist, essayist, and poet (d. 2005)
1927 – Kay Kendall, English actress and comedian (d. 1959)
1927 – Péter Zwack, Hungarian businessman and diplomat (d. 2012)
1928 – Tom Donahue, American radio host and producer (d. 1975)
1928 – Alice Drummond, American actress (d. 2016)
1929 – Larance Marable, American drummer (d. 2012)
1929 – Robert Welch, English silversmith and industrial designer (d. 2000)
1930 – Tommy Bryant, American bassist (d. 1982)
1930 – Keith Davis, New Zealand rugby player (d. 2019)
1930 – Malcolm Fraser, Australian politician, 22nd Prime Minister of Australia (d. 2015)
1932 – Inese Jaunzeme, Latvian javelin thrower and surgeon (d. 2011)
1932 – Leonidas Vasilikopoulos, Greek admiral and intelligence chief (d. 2014)
1933 – Maurice André, French trumpet player (d. 2012)
1933 – Yevgeny Minayev, Russian weightlifter (d. 1993)
1934 – Jocasta Innes, Chinese-English journalist and author (d. 2013)
1934 – Bob Northern, American horn player and bandleader
1934 – Bengt I. Samuelsson, Swedish biochemist and academic, Nobel Prize laureate
1935 – Terry Lightfoot, English clarinet player and bandleader (d. 2013)
1936 – Günter Blobel, Polish-American biologist and academic, Nobel Prize laureate (d. 2018)
1938 – Lee “Shot” Williams, American singer (d. 2011)
1939 – Heinz Holliger, Swiss oboist, composer, and conductor
1940 – Tony Sheridan, English singer-songwriter and guitarist (d. 2013)
1941 – Martin Carthy, English singer-songwriter, guitarist, and producer
1941 – Bobby Cox, American baseball player and manager
1941 – Ambrose Greenway, 4th Baron Greenway, English photographer and politician
1941 – Ronald Isley, American singer-songwriter and producer
1942 – David Hunt, Baron Hunt of Wirral, English politician, Secretary of State for Wales
1942 – John Konrads, Australian swimmer
1942 – Danny Ongais, American race car driver
1943 – Vincent Crane, English pianist and composer (d. 1989)
1943 – John Dalton, English bass player
1943 – Hilton Valentine, English guitarist and songwriter
1944 – Haleh Afshar, Baroness Afshar, Iranian-English academic and politician
1944 – Marcie Blane, American singer
1944 – Janet Dailey, American author and entrepreneur (d. 2013)
1944 – Mary Robinson, Irish lawyer and politician, 7th President of Ireland
1945 – Ernst Messerschmid, German physicist and astronaut
1945 – Richard Hatch, American actor, writer, and producer (d. 2017)
1946 – Allan McKeown, English-American screenwriter and producer (d. 2013)
1946 – Wayne Roycroft, Australian equestrian rider and coach
1947 – Bill Champlin, American singer-songwriter, guitarist, and producer
1947 – Linda Laubenstein, American physician and academic (d. 1992)
1947 – İlber Ortaylı, Turkish historian and academic
1948 – Elizabeth Buchan, English author and critic
1948 – Joe Camilleri, Maltese-Australian singer-songwriter and saxophonist
1948 – Jonathan Hyde, Australian-English actor
1948 – Denis MacShane, Scottish journalist and politician, UK Minister of State for Europe
1948 – Leo Sayer, English-Australian singer-songwriter and musician
1949 – Andrew Neil, Scottish journalist and academic
1949 – Denis O’Connor, British police officer
1949 – Rosalind Plowright, English soprano
1950 – Will Hutton, English economist and journalist
1951 – Al Franken, American actor, screenwriter, and politician
1951 – Adrian Hardiman, Irish lawyer and judge (d. 2016)
1952 – Mr. T, American actor and wrestler
1953 – Nora Aunor, Filipino actress and recording artist
1954 – D. B. S. Jeyaraj, Sri Lankan-Canadian journalist and blogger
1954 – Janice Karman, American film producer, record producer, singer, and voice actress
1954 – Marc Ribot, American guitarist and composer
1955 – Paul Barber, English field hockey player
1955 – Stan Lynch, American drummer, songwriter, and producer
1957 – James Bailey, American basketball player
1957 – Nadine Dorries, English nurse and politician
1957 – Judge Reinhold, American actor and producer
1957 – Renée Soutendijk, Dutch actress
1958 – Christian Audigier, French fashion designer (d. 2015)
1958 – Muffy Calder, Canadian-Scottish computer scientist and academic
1958 – Michael Crick, English journalist and author
1958 – Naeem Khan, Indian-American fashion designer
1958 – Jefery Levy, American director, producer, and screenwriter
1959 – Nick Cassavetes, American actor, director, and screenwriter
1959 – Abdulla Yameen, Maldivian politician, 6th President of the Maldives
1960 – Jeffrey Dahmer, American serial killer (d. 1994)
1960 – Kent Hrbek, American baseball player and sportscaster
1960 – Mohanlal, Indian actor
1960 – Mark Ridgway, Australian cricketer
1960 – Vladimir Salnikov, Russian swimmer
1962 – David Crumb, American composer and educator
1963 – Richard Appel, American screenwriter and producer
1963 – Patrick Grant, American musician and producer
1963 – David Lonsdale, English actor
1964 – Pete Sandoval, Salvadoran-American drummer
1963 – Kevin Shields, American-Irish singer-songwriter, guitarist, and producer
1963 – Dave Specter, American guitarist
1963 – Laurie Spina, Australian rugby league player and sportscaster
1964 – Danny Bailey, English footballer and coach
1965 – Josh Richman, American actor and producer
1966 – Lisa Edelstein, American actress and playwright
1966 – Tatyana Ledovskaya, Belarusian hurdler
1967 – Chris Benoit, Canadian professional wrestler (d. 2007)
1968 – Ilmar Raag, Estonian director, producer, and screenwriter
1968 – Matthias Ungemach, German-Australian rower
1968 – Julie Vega, Filipino actress and singer (d. 1985)
1969 – Pierluigi Brivio, Italian footballer
1969 – Georgiy Gongadze, Georgian-Ukrainian journalist and director (d. 2000)
1969 – Masayo Kurata, Japanese voice actress and singer
1969 – George LeMieux, American lawyer and politician
1969 – Brian Statham, Rhodesian born English footballer, defender and manager
1970 – Brigita Bukovec, Slovenian hurdler
1970 – Dorsey Levens, American football player and sportscaster
1970 – Pauline Menczer, Australian surfer
1970 – Carl Veart, Australian footballer and coach
1972 – The Notorious B.I.G., American rapper (d. 1997)
1973 – Stewart Cink, American golfer
1973 – Noel Fielding, English comedian, musician and television presenter
1974 – Brad Arthur, Australian rugby league coach
1974 – Fairuza Balk, American actress
1974 – Aditi Gowitrikar, Indian model, actress, and physician, Mrs. World 2001
1974 – Havoc, American rapper and producer
1975 – Anthony Mundine, Australian rugby league player and boxer
1976 – Stuart Bingham, English snooker player
1976 – Abderrahim Goumri, Moroccan runner (d. 2013)
1976 – Deron Miller, American singer-songwriter and guitarist
1977 – Quinton Fortune, South African international footballer midfielder and coach
1977 – Michael Fuß, German footballer
1977 – Ricky Williams, American football player and coach
1978 – Max B, American rapper and songwriter
1978 – Briana Banks, German-American porn actress and model
1978 – Jamaal Magloire, Canadian basketball player and coach
2020 – Alan Merten, fifth President of George Mason University (b. 1941)
Holidays and observances on May 21
Afro-Colombian Day (Colombia)
Christian feast day:
Arcangelo Tadini
Blessed Adílio Daronch and Manuel Gómez González
Blessed Franz Jägerstätter
Earliest day on which Corpus Christi can fall, while June 24 is the latest; held on Thursday after Trinity Sunday (often locally moved to Sunday). (Roman Catholic Church)
Emperor Constantine I
Eugène de Mazenod
Helena of Constantinople, also known as “Feast of the Holy Great Sovereigns Constantine and Helen, Equal-to-the-Apostles.” (Eastern Orthodox Church, Anglican Communion)
John Elliot (Episcopal Church)
Saints of the Cristero War, including Christopher Magallanes
May 21 (Eastern Orthodox liturgics)
Circassian Day of Mourning (Circassians)
Day of Patriots and Military (Hungary)
Independence Day, celebrates the Montenegrin independence referendum in 2006, celebrated until the next day. (Montenegro)
Navy Day (Chile)
Saint Helena Day, celebrates the discovery of Saint Helena in 1502. (Saint Helena, Ascension and Tristan da Cunha)
World Day for Cultural Diversity for Dialogue and Development (International)
