 On the release of the Isabella of Valois, Duchess of Bourbon he was exchanged (1370) and rejoined the Black Prince at Limoges.In 1377, Richard II confirmed an annual grant of £100 to Burley granted to him first by Sir John Chandos and then by Edward III along with the custody of Carmarthen castle, in terms referring to him as "the King's father's Knight".In the same year, Burley was given the office of Master of the Falcon and Keeper of the Mews near Charring, and was appointed constable of Windsor Castle for life.