Lionel of Antwerp, 1st Duke of Clarence, KG was the third son, but the second son to survive infancy, of the English king Edward III and Philippa of Hainault. He was named after his birthplace, at Antwerp in the Duchy of Brabant. Lionel was born of a Flemish mother and was a grandson of William I, Count of Hainaut. He grew to be nearly seven feet in height and had an athletic build.