sentences:  Katherine Grey's maternal grandparents were Charles Brandon, 1st Duke of Suffolk and Mary Tudor ("formerly" Queen Consort of France), youngest surviving daughter of Henry VII and Elizabeth of York.Through their grandmother, the Grey sisters had a close claim in the line of succession to the English throne.They were preceded in the line of succession only by Henry VIII's three children – Prince Edward, Lady Mary and Lady Elizabeth – and the descendants of Princess Margaret, the elder daughter of Henry VII and Queen Consort of Scotland, after 1542 represented by Mary, Queen of Scots.