 In 1357, there being no male line left of the Giffards, Joanna, a daughter and co-heiress, of the last Sir Hugo de Giffard, married Sir William [or Thomas] de la Haye of Peebles, of Locherworth (Locherwart), the Sheriff of Peebles.He was invested with the barony and lands of Yester through his wife.The barony has stayed with the Hay family ever since.