Profession: King of Castille and Leon
Why Famous: The Spanish king of Castile and Leon succeeded his father Alfonso XI at age 15. He was remembered by his enemies for his vicious acts of cruelty but later sources took to calling him "Just". He ruled from 1350 to 1369 before he was murdered by Henry Du Guesclin.
- 1353-06-03 Peter of Castile [Peter the Cruel] (18) marries Blanch of Bourbon (14) in Valladolid, Spain. Peter abandons her 2 days later for his secret wife Maria de Padilla.
- 1369-03-14 Battle of Montiel: Peter of Castile (Peter the Cruel) with support from England is defeated by an alliance between the French and his half-brother Henry II