Edmund Mortimer

Sir Edmund Mortimer IV (10 December 1376 – January 1409) was an English nobleman and landowner who played a part in the rebellions of the Welsh leader Owain Glyndŵr and of the Percy family against King Henry IV, at the beginning of the 15th century. He perished at the siege of Harlech as part of these conflicts. He was related to many members of the English royal family through his mother, Princess Philippa, Countess of Ulster, who was a granddaughter of King Edward of Windsor. Family Edmund IV was born on 10 December 1376 at Ludlow Castle in Shropshire as the second son of Edmund Mortimer, 3rd Earl of March, by his wife Philippa Plantagenet. He was a grandson of Lionel of Antwerp, Duke of Clarence, thus a great-grandson of King Edward III of England. His grandfather Lionel was previously married to Violante Visconti, sister of Gian Galeazzo Visconti, the Duke of Milan. Both were members of the House of Visconti and the Royal House of Savoy. Edmund Mortimer had an elder brother, Roger Mortimer, 4th Earl of March, and two sisters, Elizabeth, who married Henry 'Hotspur' Percy, and Philippa, who married firstly John Hastings, 3rd Earl of Pembroke, secondly Richard Fitzalan, 11th Earl of Arundel, and thirdly, Sir Thomas Poynings.