- Feb 9 Constantine XI Palaeologus, last Byzantine Emperor (1449-53), born in Constantinople, Byzantine Empire (d. 1453)
- Feb 14 Leon B. Alberti, Italian Renaissance humanist and architect (Tempio Malatestiano; Palazzo Rucellai; Santa Maria Novella), born in Genoa, Republic of Genoa (d. 1472)
- Mar 25 John Beaufort, 1st Duke of Somerset, English military leader (d. 1444)