This Day in History: 1372-07-11

On 11th July 1372, Edward III’s fourth surviving son, Edmund of Langley, married his elder brother John of Gaunt’s (lord of Pontefract) wife younger sister, Isabella of Castile. She was the daughter of the late King Peter of Castile meaning that Edmund and his heirs were now ‘reserves’ in line for the Castilian throne behind Gaunt.