Henry was born at Petworth in Sussex in 1273, seven months after his father's death, saving the family line from extinction, as two older brothers had died in infancy, and all six uncles had died without leaving any … See more

By the summer of 1295, Henry was in the north with his grandfather Earl Warenne. Edward I's deliberately humiliating treatment of King John I of Scotland and his nobles was making war inevitable. Warenne was King John's father in law, used as an … See more

Edward I, on his way to launch a new campaign against the Scots, died on 7 July 1307 before crossing the border. The dying See more

In 1293, Henry came into his inheritance of estates in Sussex and Yorkshire, including Topcliffe Castle, the ancient family seat. In 1294 he married Eleanor, daughter of the Earl of Arundel. … See more

Henry de Percy married Eleanor FitzAlan, daughter of Richard FitzAlan, 8th Earl of Arundel, and had two sons:
• Henry de Percy, 2nd Baron Percy (b.1299), who … See more

Early in 1299 the King granted the estates of Ingram Balliol, who had been involved in the Scottish rebellions, to Henry Percy, including land in England and south west Scotland. This not only gave him greater income and status, but also a vested interest in the … See more

In 1309, Henry was able to buy Alnwick Castle from Anthony Bek, the Prince Bishop of Durham, giving him a base near to the action in Scotland and a substantial annual income of about £475 from the associated lands. To make the purchase price of £4666 he … See more