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In page Forbhlaith, Countess of Atholl:

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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]