August 31, 1422 - The great warrior King Henry V died and his son, aged about six months, became Henry VI of England.
Henry V is most famous for the incredible English victory at Agincourt, France. This battle was part of the English Kings' (yes, that is plural as several tried to accomplish this) campaign to gain the crown of France, which they thought they had a right to. He died after a battle of France.
His son Henry VI's reign is most notable for the War of the Roses, where the rival House of York laid claim to the English throne. Henry VI for the most part didn't want to be king.