Major Events Sep 16 Owain Glyndŵr is declared Prince of Wales by his followers Nov 11 Battle of Aleppo: Timur and his army defeat the forces of Sultan Faraj, Mameluke ruler of Egypt, 20,000 people reportedly massacred and a pyramid of their skulls built Born in 1400 Dec 22 Luca della Robbia, Italian sculptor (Madonna of Rose Garden), born in Florence (d. 1482) Who Died in 1400 Richard IIFebruary 14 Geoffrey ChaucerOctober 25 More 1400 Deaths 1399 History by Year 1401 Medieval Popes Gregory I Gregory XIII Julius II Julius III Leo X Pius V