About John Musgrave
John Musgrave was the son of Thomas Musgrave, Marshal of Berwick, and wife Elizabeth Dacre. He most likely was born at Hayton Castle, Hayton, Cumberland, England.
John was mentioned in the will of father Thomas Musgrave, dated 20 Feb 1532 and in the will of John Dacre, dated 3 Mar 1566. Based on this, we can safely guess that his date of death was after 1566.