Died in 1456

Jan 8 Lawrence Giustiniani C.R.S.A. is venerated as a saint by the Catholic Church. He was a canon regular who was appointed as a bishop and became the first Patriarch of Venice
Jan 17 Elisabeth of Lorraine-Vaudémont a pioneer of the novel in Early New High German language. Around 1437, she translated and edited four French romances by Odo Arpin of Bourges, Sibille, Loher & Maller and Hug Chapler
Aug 11 John Hunyadi a leading Hungarian military and political figure in Central and Southeastern Europe during the 15th century. According to most contemporary sources, he was son of a noble family of Romanian ancestry. He mastered his military skills on the southern borderlands of the Kingdom of Hungary that were exposed to Ottoman attacks. Appointed voivode of Transylvania and head of a number of southern counties, he assumed responsibility for the defense of the frontiers in 1441
Aug 20 Vladislav II of Wallachia a ruler of the principality of Wallachia, from 1447 to 1448, and again from 1448 to 1456.
Oct 17 Nicolas Grenon a French composer of the early Renaissance. He wrote in all the prevailing musical forms of the time, and was a rare case of a long-lived composer who learned his craft in the late 14th century but primarily practiced during the era during which the Renaissance styles were forming
Oct 23 John of Capistrano a Franciscan friar and Catholic priest from the Italian town of Capestrano, Abruzzo. Famous as a preacher, theologian, and inquisitor, he earned himself the nickname 'the Soldier Saint' when in 1456 at age 70 he led a crusade against the invading Ottoman Empire at the siege of Belgrade with the Hungarian military commander John Hunyadi
Oct 29 Wenceslaus II Duke of Opava-Ratibor a member of the Opavian branch of the Přemyslid dynasty. He was Duke of Ratibor and Kronov jointly with his brother Nicholas V from 1424 to 1437 and the sole Duke of Ratibor from 1437 until his death
Nov 3 Edmund Tudor 1st Earl of Richmond the father of King Henry VII of England and a member of the Tudor family of Penmynydd, North Wales.
Nov 9 Ulrich II Count of Celje the last Princely Count of Celje.
Nov 25 Jacques Cœur a French merchant, one of the founders of the trade between France and the Levant.
Dec 4 Charles I Duke of Bourbon the oldest son of John I, Duke of Bourbon and Marie, Duchess of Auvergne.
Dec 24 Đurađ Branković a Serbian despot from 1427 to 1456 and a baron of the Kingdom of Hungary. He collected a large library of Serbian, Slavonic, Latin, and Greek manuscripts and made his capital Smederevo, a centre of Serbian culture. He was the first of the House of Branković to hold the Serbian monarchy