John of Gaunt of Castile. As his father and elder brother, Edward, the Black Prince, became incapacitated due to poor health, Gaunt assumed control of many government functions, and rose to become one of the most powerful political figures in England. He was faced with military difficulties abroad and political divisions at home, and disagreements as to how to deal with these crises led to tensions between Gaunt, the English Parliament, and the ruling class, making him an extremely unpopular figure for a time. John exercised great influence over the English throne during the minority of King Richard II, and the ensuing periods
John of Gaunt Portugal and had concentrated his forces on the Portuguese border. He was wrong-footed by John's decision to invade Galicia, the most distant and disaffected of Castile's kingdoms. From August to October, John of Gaunt set up a rudimentary court and chancery at Ourense and received the submission of the Galician nobility and most of the towns of Galicia, though they made their homage to him conditional on his being recognised as king by the rest of Castile. While John of Gaunt had gambled on an early decisive battle, the Castilians were in no hurry to join battle, and he began