Born on April 23

43 Gaius Vibius Pansa Caetronianus consul of the Roman Republic in 43 Although supporting Gaius Julius Caesar during the Civil War, he pushed for the restoration of the Republic upon Caesar’s death. He died of injuries sustained at the Battle of Forum Gallorum
702 Ja'far al-Sadiq a descendant of Ali from his father's side and a descendant of Fatimah from his mother's side and was himself a prominent Muslim jurist. He is revered as an imam by the adherents of Shi'a Islam and Alevism and as a renowned Islamic scholar and personality by Sunni Muslims. The Shi'a Muslims consider him to be the Sixth Imam or leader and spiritual successor to Muhammad. Sunni sources claim that doctrines such as the Imamate were formulated many years after al-Sadiq and wrongly ascribed to him. The internal dispute over who was to succeed Ja'far as imam led to schism within Shi'a Islam. Al-Sadiq was celebrated among his brothers and peers and stood out among them for his great personal merits. He is highly respected by both Sunni and Shi'a Muslims for his great Islamic scholarship, pious character, and academic contributions
1014 Máel Mórda mac Murchada King of Leinster.
1141 Malcolm IV of Scotland the eldest son of Henry, Earl of Huntingdon and Northumbria and Ada de Warenne. The original Malcolm Canmore, a name now associated with his great-grandfather Malcolm III , he succeeded his grandfather David I, and shared David's Anglo-Norman tastes
1185 Afonso II of Portugal born in Coimbra on 23 April 1185 and died on 25 March 1223 in the same city. He was the second but eldest surviving son of Sancho I of Portugal by his wife, Dulce, Infanta of Aragon. Afonso succeeded his father in 1212
1371 William II Margrave of Meissen the second son of Margrave Frederick the Strict of Meissen and Catherine of Henneberg.
1420 George of Poděbrady King of Bohemia. He was leader of the Hussites
1464 Joan of France Duchess of Berry briefly Queen of France as wife of King Louis XII, in between the death of her brother, King Charles VIII, and the annulment of her marriage. After that, she retired to her domain, where she soon founded the monastic Order of the Sisters of the Annunciation of Mary. From this Order later sprang the religious congregation of the Apostolic Sisters of the Annunciation, founded in 1787 to teach the children of the poor. She was canonized on 28 May 1950 and is known in the Roman Catholic Church as Saint Joan of Valois, O.Ann.M
1484 Julius Caesar Scaliger an Italian scholar and physician who spent a major part of his career in France. He employed the techniques and discoveries of Renaissance humanism to defend Aristotelianism against the new learning. In spite of his arrogant and contentious disposition, his contemporary reputation was high, judging him so distinguished by his learning and talents that, according to Jacques August de Thou, none of the ancients could be placed above him, and the age in which he lived could not show his equal
1500 Alexander Ales a Scottish theologian of the school of Augsburg.
1508 Georg Sabinus a German poet, diplomat and academic.
1516 Georg Fabricius a Protestant German poet, historian and archaeologist.
1522 Catherine of Ricci de' Ricci, O.S.D. was an Italian Dominican Tertiary Religious Sister, who is held to have been a mystic, and is honored as a saint by the Catholic Church
1559 William Watson (priest) an English Roman Catholic priest and conspirator, executed for treason.
1597 Alvise Contarini (diplomat) a patrician and diplomat of the Republic of Venice.
1598 Maarten Tromp an officer and later admiral in the Dutch navy. His first name is also spelled as Maerten
1621 William Penn (Royal Navy officer) an English admiral and politician who sat in the House of Commons from 1660 to 1670. He was the father of William Penn, founder of the Province of Pennsylvania
1628 Johannes Hudde a burgomaster of Amsterdam between 1672 – 1703, a mathematician and governor of the Dutch East India Company.
1629 Jan Commelin the son of Isaac Commelin a historian; his brother Casparus was a bookseller and newspaper publisher. Jan a botanist became a professor of botany when many plants were imported from the Cape and Ceylon and a new system had to be developed. As alderman of the city, together with burgomaster Johan Huydecoper van Maarsseveen he led the arrangement of the new botanic garden, Hortus Medicus later becoming Hortus Botanicus. He cultivated exotic plants on his farm 'Zuyderhout' near Haarlem. Commelin amassed a fortune by selling herbs and drugs to apothecaries and hospitals in Amsterdam and other Dutch cities
1675 Charles Spencer 3rd Earl of Sunderland an English statesman from the Spencer family. He served as Lord Lieutenant of Ireland , Lord Privy Seal , Lord President of the Council and First Lord of the Treasury
1679 Johann Georg Liebknecht a German theologian and scientist. He was professor of mathematics and theology at the Ludoviciana in Giessen, Germany
1680 Richard Edgcumbe 1st Baron Edgcumbe an English politician.
1697 George Anson 1st Baron Anson a British admiral and a wealthy aristocrat, noted for his circumnavigation of the globe and his role overseeing the Royal Navy during the Seven Years' War. During his time in office Anson instituted a series of reforms to the Royal Navy
1708 Friedrich von Hagedorn born at Hamburg, where his father, a man of scientific and literary taste, was Danish ambassador.
1708 Mavra Shuvalova a Russian lady in waiting, socialite and noble and a confidante of Empress Elizabeth of Russia. She was in 1742 married to Count Peter Ivanovich Shuvalov. She played an influential role in Russia during the reign of Elizabeth
1715 Johann Friedrich Doles a German composer and pupil of J.S. Bach
1720 Vilna Gaon a Talmudist, halakhist, kabbalist, and the foremost leader of mitnagdic Jewry of the past few centuries. He is commonly referred to in Hebrew as ha-Gaon he-Chasid mi-Vilna, "the saintly genius from Vilnius"
1728 Samuel Wallis an English navigator who circumnavigated the world.
1746 Félix Vicq-d'Azyr a French physician and anatomist, the originator of comparative anatomy and discoverer of the theory of homology in biology.
1751 Gilbert Elliot-Murray-Kynynmound 1st Earl of Minto a Scottish politician diplomat. He was viceroy of the short-lived Anglo-Corsican Kingdom from 1793 to 1796 and went on to become Governor-General of India between 1807 and 1813
1753 François Joseph Bouvet a French admiral.
1756 Jacques Nicolas Billaud-Varenne a French personality of the Revolutionary period. Though not one of the most well known figures of the French Revolution, Jacques Nicolas Billaud-Varenne was an instrumental figure of the period known as the Reign of Terror. Billaud-Varenne climbed his way up the ladder of power during the period of The Terror, becoming a member of the Committee of Public Safety. He was recognized and worked with French Revolution figures Georges Danton and Maximilien Robespierre, and is often considered one of the key architects of the period known as The Terror. "No, we will not step backward, our zeal will only be smothered in the tomb; either the Revolution will triumph or we will all die."
1759 Dominique-Georges-Frédéric Dufour de Pradt a French clergyman and ambassador.
1774 Francis Austen a British officer who spent most of his long life on active duty in the Royal Navy, rising to the position of Admiral of the Fleet.
1782 Prince Teimuraz of Georgia a Georgian prince and scholar primarily known as an author of the first critical history in Georgian as well as for his work to popularize interest in the history and culture of Georgia and preserve its treasures.
1791 James Buchanan the 15th President of the United States , serving immediately prior to the American Civil War. He is, to date, the only president from Pennsylvania and the only president to remain a lifelong bachelor
1792 Thomas Romney Robinson Rev. John Thomas Romney Robinson , usually referred to as Thomas Romney Robinson, was a 19th-century astronomer and physicist. He was the longtime director of the Armagh Astronomical Observatory, one of the chief astronomical observatories in the UK of its time
1794 Wei Yuan a Chinese scholar from Shaoyang, Hunan. He moved to Yangzhou in 1831, where he remained for the rest of his life. Wei obtained the provincial degree in the Imperial examinations and subsequently worked in the secretariat of several prominent statesmen, such as Lin Zexu. Wei was deeply concerned with the crisis facing China in the early 19th century; while he remained loyal to the Qing Dynasty, he also sketched a number of proposals for the improvement of the administration of the empire
1803 Henry Young the fifth Governor of South Australia, serving in that role from 2 August 1848 until 20 December 1854. He was then the first Governor of Tasmania, from 1855 until 1861
1803 Jules d'Anethan a Belgian Catholic Party politician.
1804 Marie Taglioni an Italian/Swedish ballet dancer of the Romantic ballet era, a central figure in the history of European dance.
1805 Augustus Addison Gould an American conchologist and malacologist.
1805 Johann Karl Friedrich Rosenkranz a German philosopher and pedagogue.
1806 Wilhelm Wackernagel a German-Swiss philologist specializing in Germanic studies. He was the father of Indo-Europeanist Jacob Wackernagel
1809 Prince Charles of Hesse and by Rhine the second son of Louis II, Grand Duke of Hesse and Wilhelmine of Baden.
1810 Eugène Belgrand a French engineer who made significant contributions to the modernization of the Parisian sewer system during the 19th century rebuilding of Paris. Much of Belgrand's work remains in use today
1810 Salomon Corrodi a Swiss-Italian painter, mainly of watercolor landscapes.
1811 Carl Ferdinand Allen a Danish historian. He studied at the University of Copenhagen
1812 Frederick Whitaker an English-born New Zealand politician who served twice as the Prime Minister of New Zealand and six times as Attorney-General.
1812 Louis-Antoine Jullien a French conductor and composer of light music.