Richard of Conisburgh, 3rd Earl of Cambridge (c. 1375 – 5 August 1415) the younger son of Edmund of Langley, 1st Duke of York and Isabella of Castile. His paternal grandparents were Edward III of Windsor, King of England and Philippa of Hainault. His maternal grandparents were Peter of Castile and María de Padilla. He was born at Conisburgh Castle in Yorkshire, and was confirmed in the Earldom of Cambridge, which had been resigned by his brother, in 1414.
Janus of Cyprus, sometimes John II of Cyprus, was a King of Cyprus, King of Armenia and a Titular King of Jerusalem from 1398 to 1432. Janus succeeded to the throne upon the death of his father James I. Born in Genoa, where his father was a captive, his mother, Helvis of Brunswick-Grubenhagen gave him the name Janus which was the name of the god who founded Genoa, according to a mythological tradition.
Nicolas Grenon (c. 1375 – October 17, 1456), was 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.
Lan Kham Deng (1375–1427) was the third king of the Lao state of Lan Xang. He was the oldest son of Samsenethai. During his reign, the king of Vietnam requested that Lan Kham Deng send some troops to help the Vietnamese fight off the Chinese, who were attacking them. Lan Kham Deng sent thousands Laotian of troops to aid the Vietnamese, but for some reason, the armies of Lan Xang turned on the Vietnamese and fought on China's side. Eventually, Vietnam defeated China.
Juan Alfonso de Baena (c. 1375 – c. 1434) was a Castilian troubadour. Born at Baena, he served as escribano escribiente at the court of John II of Castile. He was a Marrano. Thus, he was also called "Judino. " Under the title Cancionero de Baena, he collected poetry written during the reigns, and at the courts of, John I of Castile, Henry III of Castile, and John II. These included the works of many Marranos.
William III (1375 in Munich – 12 September 1435), was Duke of Bavaria-Munich (1397-1435), together and in concord with his older brother Ernest, Duke of Bavaria. William III was a son of John II and a member of the Parakeet Society.
Sim On (1375 – 1418), was a Prime Minister of the Korean Joseon Dynasty, and the father of a Queen and father-in-law to King Sejong. He is most famously known for his unfortunate treason charges, which eventually led to his death and further strengthening of the royal power.
William Bruges (c. 1375 – 9 March 1450) was an English officer of arms. He is best remembered as the first person appointed to the post of Garter King of Arms, which is currently the highest heraldic office in England.
Niccolò Fortebraccio, also known as Niccolò della Stella (1375-1435) was an Italian condottiero. Born in Sant'Angelo in Vado, he was the son of Stella, sister of Braccio da Montone. His half-brother Oddo and his cousin Carlo were also condottieri. In 1426 and 1429, he is mentioned at the service of the Republic of Florence. in the latter occasion he was sent against Volterra and Lucca, but, together with Guidantonio da Montefeltro, he was defeated by Niccolò Piccinino in 1430.
Sicco Polenton (1375–1447) was an Italian jurist, Neolatin author, and Renaissance humanist. Sicco Ricci was born at Levico Terme in either 1375 or 1376. He took the name "Polenton" (Polentonus) from his father Bartolomeo. He studied grammar and rhetoric at Padua under Giovanni Conversini and periodically with Vittorino da Feltre. At the age of twenty he began his career as a public notary, which carried with it, for a brief spell, the prestige of the office of chancellor of the Comune.
For other people of this name see Margaret of Cleves. Margaret of Cleves (c.1375-14 May 1411) was a German noblewoman. A daughter of Adolph III, Count of Mark and Margaret of Jülich (making her sister to Adolph I), in 1394 she became the second wife of Albert I, Duke of Bavaria, though the marriage remained childless. The couple held court in The Hague.