Forbhlaith (written also as Forflissa, Ferelith, Fernelith or Forueleth) was the latter of two heiresses of Atholl, the other being her sister Isabella. She married David de Hastings, a French knight who already possessed minor lands in Angus. They were, however, without a son when David died in 1247.^[1] They were succeeded by their daughter Ada.^{[citation needed]}