who it hotspur married to
Mortimer was supported by his brother-in-law, Henry Percy, known as Harry Hotspur who was married to his sister, Elizabeth Mortimer. Hotspur was the son of the Duke of Northumberland and a grandson of Mary Plantagenet, a granddaughter of Henry, 3rd Earl of Lancaster by his wife Maud Chaworth. The impulsive and fiery Hotspur marched to meet the king's army, their forces clashed at the Battle of Shrewsbury on 21st July 1403.