Born on 23rd day

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
June 23, 47 Caesarion the last king of the Ptolemaic dynasty of Egypt, who reigned jointly with his mother Cleopatra VII of Egypt, from September 2, 44 Between the death of Cleopatra, on August 12, 30 BC, up to his own death on August 23, 30 BC, he was nominally the sole pharaoh. He was killed on the orders of Octavian, who would become the Roman emperor Augustus. He was the eldest son of Cleopatra VII, and possibly the only son of Julius Caesar, after whom he was named
September 23, 63 Augustus the founder of the Roman Empire and its first Emperor, ruling from 27 BC until his death in 14 AD.
August 23, 406 Radagaisus a Gothic king who led an invasion of Roman Italy in late 405 and the first half of 406. A committed Pagan, Radagaisus evidently planned to sacrifice the Senators of the Christian Roman Empire to the gods, and to burn Rome to the ground. Radagaisus was executed after being defeated by the half-Vandal general Stilicho. 12,000 of his higher-status fighters were drafted into the Roman army and some of the remaining followers were dispersed, while so many of the others were sold into slavery that the slave market briefly collapsed. These Goths later joined Alaric I in his conquest of Rome in 410
December 23, 484 Huneric King of the Vandals and the oldest son of Genseric. He dropped the imperial politics of his father and concentrated mainly on internal affairs. He was married to Eudocia, daughter of western Roman Emperor Valentinian III and Licinia Eudoxia. She left him, probably in 472. She had one son by him, Hilderic
May 23, 635 K'inich Kan B'alam II king of the pre-Columbian Maya polity of Baakal in the Classic period of Mesoamerican chronology, based around the ceremonial center and city now known as the Maya archaeological site of Palenque. Kan B'alam took the throne on January 10, 684, several months after the death of his father and predecessor, Pacal the Great. He continued the ambitious project of adorning Palenque with fine art and architecture begun by his father; his most important addition to the city of Palenque was the Temple of the Cross which is the center piece of the Temple of the Cross Complex. He was succeeded by his younger brother, K'inich K'an Joy Chitam II
April 23, 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
November 23, 911 Burchard I Duke of Swabia the Duke of Alamannia from 909 to his death and margrave of Rhaetia, as well as Count in the Thurgau and Baar. Born between 855 and 860, he was the son of Adalbert II, Count in the Thurgau. He himself married Liutgard of Saxony
November 23, 912 Otto I Holy Roman Emperor German king from 936 and emperor of the Holy Roman Empire from 962 until his death in 973. The oldest son of Henry I the Fowler and Matilda, Otto was "the first of the Germans to be called the emperor of Italy"
August 23, 963 Richard II Duke of Normandy the eldest son and heir of Richard I the Fearless and Gunnora. He was a Norman nobleman of the House of Normandy
April 23, 1014 Máel Mórda mac Murchada King of Leinster.
May 23, 1052 Philip I of France King of the Franks from 1060 to his death. His reign, like that of most of the early Capetians, was extraordinarily long for the time. The monarchy began a modest recovery from the low it reached in the reign of his father and he added to the royal demesne the Vexin and Bourges
May 23, 1100 Emperor Qinzong of Song the ninth emperor of the Song Dynasty of China, and the last emperor of the Northern Song. His personal name was Zhao Huan. He reigned from January 1126 to January 1127
June 23, 1137 Adalbert of Mainz I von Saarbrücken , Archbishop of Mainz from 1111 until his death, played a key role in opposing Henry V, Holy Roman Emperor, and in securing the election of Lothar III, Holy Roman Emperor.
April 23, 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
March 23, 1145 Tashfin ibn Ali the 6th Almoravid king, he reigned in 1143–1145.
September 23, 1158 Geoffrey II Duke of Brittany Duke of Brittany and 3rd Earl of Richmond between 1181 and 1186, through his marriage with the heiress Constance. Geoffrey was the fourth son of King Henry II of England and Eleanor, Duchess of Aquitaine
June 23, 1160 John of Matha a Christian saint of the 12th century and founder of the Order of the Most Holy Trinity, dedicated to ransoming captive Christians.
December 23, 1173 Louis I Duke of Bavaria the Duke of Bavaria in 1183 and Count Palatine of the Rhine in 1214. He was a son of Otto I and his wife Agnes of Loon. Louis was married to Ludmilla, a daughter of Duke Frederick of Bohemia
April 23, 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
February 23, 1187 Ferdinand Count of Flanders reigned as jure uxoris Count of Flanders and Hainaut from his marriage to Countess Joan, celebrated in Paris in 1212, until his death. He was born in Coimbra, and he was an Infante of Portugal as the fourth son of King Sancho I of Portugal and Dulce of Aragon
February 23, 1187 Peter I Count of Urgell the second son of King Sancho I of Portugal and his wife Dulce, infanta of Aragon, and would eventually become Count of Urgell and Lord of the Balearic Islands.
September 23, 1193 Robert de Sablé the eleventh Grand Master of the Knights Templar from 1191 to 1193 and Lord of Cyprus from 1191 to 1192.
September 23, 1215 Kublai Khan the fifth Khagan of the Ikh Mongol Uls , reigning from 1260 to 1294, and the founder of the Chinese Yuan dynasty, a division of the Mongol Empire.
November 23, 1221 Alfonso X of Castile the King of Castile, León and Galicia from 30 May 1252 until his death. During the Imperial election of 1257, a dissident faction chose him to be King of the Romans on 1 April. He renounced his imperial claim in 1275, and in creating an alliance with England in 1254 his claim on Gascony also
January 23, 1251 Oddone di Monferrato an Italian papal diplomat and Cardinal. He was of the noble house of Monferrat, son of Marquis Guglielmo VI de Monferrato
March 23, 1283 Joseph I of Constantinople a Byzantine monk who served twice as Patriarch of Constantinople, from 1266 to 1275 and from 1282 until shortly before his death in 1283. He is most notable as an opponent of Emperor Michael VIII Palaiologos' plans to unite the Orthodox Church with the Catholic Church, for which he is recognized as a confessor by the Orthodox Church
July 23, 1301 Otto Duke of Austria a Duke of Austria and the youngest son of Albert I of Germany and Elisabeth of Tirol.
May 23, 1304 Jehan de Lescurel a medieval poet and composer.
November 23, 1306 John de Bohun 5th Earl of Hereford born in St Clement's, Oxford to Humphrey de Bohun, 4th Earl of Hereford and Elizabeth of Rhuddlan, a daughter of Edward I of England.
June 23, 1314 Henry de Bohun an English knight, the grandson of Humphrey de Bohun, 2nd Earl of Hereford. He was killed on the first day of the Battle of Bannockburn by Robert the Bruce. Riding in the vanguard of heavy cavalry, de Bohun caught sight of the Scottish king who was mounted on a small palfrey armed only with a battle-axe. De Bohun lowered his lance and charged, but Bruce stood his ground. At the last moment Bruce manoeuvred his mount nimbly to one side, stood up in his stirrups and hit de Bohun so hard with his axe that he split his helmet and head in two. Despite the great risk the King had taken, he merely expressed regret that he had broken the shaft of his favourite axe
March 23, 1338 Emperor Go-Kōgon the 4th of the Ashikaga Pretenders during the Period of the Northern and Southern Courts. According to pre-Meiji scholars, his reign spanned the years from 1352 through 1371
July 23, 1339 Louis I Duke of Anjou the second son of John II of France and the founder of the Angevin branch of the French royal house. Bonne of Bohemia gave birth to him at the Château de Vincennes. His father appointed him Count of Anjou and Count of Maine in 1356, and then raised him to the title Duke of Anjou in 1360 and Duke of Touraine in 1370
January 23, 1340 Biligtü Khan Ayushiridara a ruler of the Northern Yuan Dynasty in Mongolia. Ascended to the throne after the death of his father who was the last Yuan emperor, he defeated the invading Ming army in 1372 and recaptured some Chinese borderlands that were previously lost to the newly founded Ming Dynasty
January 23, 1350 Vincent Ferrer a Valencian Dominican friar, who gained acclaim as a missionary and a logician. He is honored as a saint of the Roman Catholic Church
April 23, 1371 William II Margrave of Meissen the second son of Margrave Frederick the Strict of Meissen and Catherine of Henneberg.
January 23, 1378 Louis III Elector Palatine an Elector Palatine of the Rhine from the house of Wittelsbach in 1410–1436.
June 23, 1385 Stephen Count Palatine of Simmern-Zweibrücken Count Palatine of Simmern and Zweibrücken from 1410 until his death in 1459.
August 23, 1388 Eberhard IV Count of Württemberg the ruling Count of Württemberg from 1417 until his death.
September 23, 1392 Filippo Maria Visconti ruler of Milan from 1412 to 1447.
July 23, 1401 Francesco I Sforza an Italian condottiero, the founder of the Sforza dynasty in Milan, Italy. He was the brother of Alessandro, with whom he often fought
November 23, 1402 Jean de Dunois the illegitimate son of Louis I, Duke of Orléans, by Mariette d'Enghien. His nickname, the "Bastard of Orléans" , was a term of respect, since it acknowledged him as a first cousin to the king and acting head of a cadet branch of the royal family during his half-brother's captivity. In 1439 he received the county of Dunois from his half-brother, Charles, Duke of Orléans, and later king Charles VII made him count of Longueville
February 23, 1417 Louis IX Duke of Bavaria Duke of Bavaria-Landshut from 1450. He was a son of Henry XVI the Rich and Margaret of Austria
February 23, 1417 Pope Paul II Pope from 30 August 1464 to his death in 1471.
November 23, 1417 William FitzAlan 16th Earl of Arundel Baron Maltravers KG.
April 23, 1420 George of Poděbrady King of Bohemia. He was leader of the Hussites
March 23, 1430 Margaret of Anjou the wife of King Henry VI of England. As such, she was Queen of England from 1445 to 1461 and again from 1470 to 1471. Born in the Duchy of Lorraine, into the House of Valois-Anjou, Margaret was the second eldest daughter of René I of Naples and Isabella, Duchess of Lorraine
June 23, 1433 Francis II Duke of Brittany Duke of Brittany from 1458 to his death. He was the son of Richard of Brittany and the grandson of Duke John A recurring theme in Francis' life would be his quest to maintain the independence of Brittany from France. As such, his reign was characterised by conflicts with King Louis XI of France and with his daughter, Anne of France, who served as regent during the minority of her brother, Charles VIII. The armed and unarmed conflicts between 1484-1488 have been called the Mad War and also the War of the Public Weal
September 23, 1434 Yolande of Valois a Duchess consort of Savoy. She was a daughter of King Charles VII of France, "The Victorious," and Marie of Anjou. She married Duke Amadeus IX of Savoy in 1452. She was named after her grandmother, Yolande of Aragon. She is sometimes known as Yolande of France. Yolande acted as regent of Savoy in 1472-78
September 23, 1439 Francesco di Giorgio Martini an Italian painter of the Sienese School and a sculptor, as well as being, in Nikolaus Pevsner's terms: one of the most interesting later Quattrocento architects and a visionary architectural theorist; as a military engineer he executed architectural designs and sculptural projects and built almost seventy fortifications for the Federico da Montefeltro, Count of Urbino, for whom he was working in the 1460s, building city walls as at Iesi and early examples of star-shaped fortifications.