Eustace Percy, 1st Baron Percy of Newcastle
…family: he was the seventh and youngest son of Henry Percy, 7th Duke of Northumberland, and Lady Edith, daughter of George Campbell, 8th Duke of Argyll. Henry Percy, Earl Percy, and Alan Percy, 8th Duke of Northumberland, were his elder brothers. His uncle, the ninth Duke of Argyll, was married to Princess Louise, daughter of…