John of Gaunt John of Gaunt John of Gaunt, Duke of Lancaster (6 March 13403 February 1399) was an English prince, military leader, and statesman. He was the third of the five sons of King Edward III of England who survived to adulthood. Due to his royal origin, advantageous marriages, and some generous land grants, Gaunt was one of the richest men of his era, and an influential figure during the reigns of both his father, Edward, and his nephew, Richard II. As Duke of Lancaster, he is the founder of the royal House of Lancaster, whose members would ascend to the throne
John of Gaunt scale and organisation to that of a monarch. He owned land in almost every county in England, a patrimony that produced a net income of between £8,000 and £10,000 a year. After the death in 1376 of his older brother Edward of Woodstock (also known as the "Black Prince"), John of Gaunt contrived to protect the religious reformer John Wycliffe, possibly to counteract the growing secular power of the church. However, John's ascendancy to political power coincided with widespread resentment of his influence. At a time when English forces encountered setbacks in the Hundred Years' War against France, and Edward