David de Hastings
David de Hastings, jure uxoris Earl of Atholl, was a Norman knight who possessed minor lands in Angus.
He was son of John de Hastings of Dun, Angus, Scotland.
Some time before or in 1242 he married Forbhlaith, Countess of Atholl, daughter of Henry, 3rd Earl of Atholl and Margaret. In 1242 he is recorded with the style Earl of Atholl jure uxoris.
Having no male heir, David and Fernelith were succeeded by their daughter Ada.