Died on May 15

392 Valentinian II Roman Emperor from AD 375 to 392.
558 Hilary of Galeata venerated as a saint in the Roman Catholic and Eastern Orthodox churches. His feast day is May 15
884 Pope Marinus I Pope from 16 December 882 to his death in 884. He succeeded John VIII in about the end of December 882
913 Hatto I (archbishop of Mainz) archbishop of Mainz from 891 until his death.
925 Nicholas Mystikos the Ecumenical Patriarch of Constantinople from March 901 to February 907 and from May 912 to his death in 925. His feast day in the Orthodox Church is May 16
947 Emperor Taizong of Liao the second emperor of the Khitan Empire.
973 Byrhthelm the Bishop of Wells and briefly the archbishop of Canterbury. A monk from Glastonbury Abbey, he served as Bishop of Wells beginning in 956, then was translated to Canterbury in 959, only to be translated back to Wells in the same year
1036 Emperor Go-Ichijō the 68th emperor of Japan, according to the traditional order of succession.
1130 Isidore the Laborer a Spanish farmworker known for his piety toward the poor and animals. He is the Catholic patron saint of farmers and of Madrid and of La Ceiba, Honduras. His feast day is celebrated on 15 May
1157 Yuri Dolgorukiy a Rurikid prince and founder of Moscow. He reigned as Velikiy Kniaz of Kiev from September 1149 to April 1151 and then again from March 1155 to May 1157. Yuri played a key role in the transition of political power from Kiev to Suzdal following the death of his elder brother Mstislav the Great
1174 Nur ad-Din atabeg of Aleppo a member of the Turkic Zengid dynasty which ruled the Syrian province of the Seljuk Empire. He reigned from 1146 to 1174
1175 Mleh Prince of Armenia the eighth lord of Armenian Cilicia or “Lord of the Mountains”.
1242 Muiz ud din Bahram the sixth sultan of the Mamluk Dynasty. He was the son of Shams ud din Iltutmish and brother of Razia Sultan. While his sister was in Bathinda, he declared himself king with the support of forty chiefs. His sister tried to regain the throne with the aid of her husband Altunia, a chief of Bathinda, though they were eventually arrested and executed. Even so, during Muiz ud din Bahram's two years as king, the chiefs that had originally supported him became disordered and constantly bickered among each other. It was during this period of unrest that he was murdered by his own army in 1242. After his death, he was succeeded by Ala ud din Masud, a son of Rukn ud din Firuz
1268 Peter II Count of Savoy the 1st Earl of Richmond from 1241 until his death and the Count of Savoy from 1263 until his death. He built the Savoy Palace in London
1324 Władysław of Oświęcim a Duke of Oświęcim from 1315 until his death.
1346 Henry I of Jawor a Duke of Jawor-Lwówek-Świdnica-Ziębice during 1301–1312 , sole Duke of Jawor-Lwówek since 1312 and Duke of Głogów since 1337 until his death.
1381 Eppelein von Gailingen a famous German robber baron in the Middle Ages.
1461 Domenico Veneziano an Italian painter of the early Renaissance, active mostly in Perugia and Tuscany.
1464 Henry Beaufort 3rd Duke of Somerset an important Lancastrian military commander during the English Wars of the Roses. He is sometimes numbered the 2nd Duke of Somerset, since the title was re-created for his father after his uncle died. He also held the subsidiary titles of 5th Earl of Somerset, 2nd Marquess of Dorset and 2nd Earl of Dorset
1481 Euphrosynus of Pskov a Russian monk and founder of a monastic community.
1585 Niwa Nagahide a Japanese samurai of the Sengoku through Azuchi-Momoyama periods of the 16th century. He served as a retainer to the Oda clan, and was eventually a daimyo in his own right
1591 Dmitry of Uglich a Russian tsarevich famously impersonated by a series of pretenders after the death of his father Ivan the Terrible.
1609 Giovanni Croce an Italian composer of the late Renaissance, of the Venetian School. He was particularly prominent as a madrigalist, one of the few among the Venetians other than Monteverdi
1622 Petrus Plancius a Flemish astronomer, cartographer and clergyman. He was born as Pieter Platevoet in Dranouter, now in Heuvelland, West Flanders. He studied theology in Germany and England. At the age of 24 he became a minister in the Dutch Reformed Church
1634 Hendrick Avercamp a Dutch painter.
1683 John Ernest II Duke of Saxe-Weimar a duke of Saxe-Weimar. He was the second but eldest surviving son of William, Duke of Saxe-Weimar, and Eleonore Dorothea of Anhalt-Dessau
1698 Marie Champmeslé a French actress.
1699 Sir Edward Petre 3rd Baronet an English Jesuit who became a close adviser to King James II and was appointed a privy councillor.
1700 John Hale (Beverly minister) the Puritan pastor of Beverly, Massachusetts, during the Salem witch trials in 1692. He was one of the most prominent and influential clergymen associated with the witch trials, and is most noted as having initially supported the trials, and then changing his mind, publishing a critique of them
1734 Sebastiano Ricci an Italian painter of the late Baroque school of Venice. About the same age as Piazzetta, and an elder contemporary of Tiepolo, he represents a late version of the vigorous and luminous Cortonesque style of grand manner fresco painting
1740 Ephraim Chambers primarily known for producing the Cyclopaedia, or a Universal Dictionary of Arts and Sciences.
1762 Michał Kazimierz "Rybeńko" Radziwiłł a Polish–Lithuanian noble. A member of the aristocratic Radziwiłł family, he was frequently referred to by his idiolect Rybeńko , to distinguish him from the other Michał Kazimierz Radziwiłł. Ordynat of Niasviž and Olyka, owner of Biržai, Dubingiai, Slutsk and Kopyła
1773 Alban Butler an English Roman Catholic priest and hagiographer.
1782 Richard Wilson (painter) an influential British landscape painter, who worked in Britain and Italy. With George Lambert he is recognised as a pioneer in British art of landscape for its own sake and was described in the Welsh Academy Encyclopedia of Wales as the "most distinguished painter Wales has ever produced and the first to appreciate the aesthetic possibilities of his country". In December 1768 Wilson became one of the founder-members of the Royal Academy
1785 Karel Blažej Kopřiva a Czech organist and composer from a family of musicians.
1789 Jean-Baptiste Marie Pierre a French painter, draughtsman and administrator.
1792 Maria Luisa of Spain Holy Roman Empress, German Queen, Queen of Hungary and Bohemia, Grand Duchess of Tuscany as the spouse of Leopold II, Holy Roman Emperor.
1814 Ivan Akimov a Russian painter in the Classical style.
1824 Johann Philipp Stadion Count von Warthausen Carl Joseph, Graf von Stadion-Warthausen. Born in Mainz, he was a statesman, foreign minister, and diplomat who served the Habsburg empire during the Napoleonic Wars. He was also founder of the Austrian National Bank. Johann Philip was Count of Stadion-Warthausen 1787–1806
1832 Carl Friedrich Zelter a German composer, conductor and teacher of music. Working in his father's bricklaying business, Zelter attained mastership in that profession, and was a musical autodidact
1833 Edmund Kean celebrated Shakespearean stage actor born in England, who performed in London, Belfast, New York, Quebec, and Paris among other places. He was well known for his short stature, tumultuous personal life, and controversial divorce. He expired of dissipation at the age of 44
1842 Emmanuel comte de Las Cases a French atlas-maker and author, famed for an admiring book on Napoleon.
1845 Kapiton Zelentsov a Russian painter, lithographer and illustrator.
1845 George II Prince of Waldeck and Pyrmont Prince of Waldeck and Pyrmont from 1813 to 1845.
1845 Braulio Carrillo Colina the Head of State of Costa Rica during two periods: the first between 1835 to 1837, and the de facto between 1838 and 1842.
1847 Daniel O'Connell an Irish political leader in the first half of the 19th century. He campaigned for Catholic Emancipation—including the right for Catholics to sit in the Westminster Parliament, denied for over 100 years—and repeal of the Act of Union which combined Great Britain and Ireland
1852 Joseph Hermann Schmidt professor of Obstetrics in Berlin, and official of the Prussian cultural ministry.
1852 Louisa Adams First Lady of the United States from 1825 to 1829. She is the only First Lady born outside of the United States
1863 Zygmunt Padlewski a Polish insurgent who participated in the January Uprising. He was one of the leaders of the "Red" faction among the insurrectionists as a member of the Central National Committee and the Provisional National Government
1866 William Henry Harvey an Irish botanist who specialised in algae.