DE HASTING, David Earl of Atholl, jure uxoris, Sir ¹

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David married Forflissa Countess of Atholl, suo jure, daughter of Henry Earl of Atholl and Margaret.¹ (Forflissa Countess of Atholl, suo jure was born about 1200 and died after 1269 ¹.)

  Marriage Notes:

"FORFLISSA, or FERNELITH, Countess of Atholl, who married Sir David of Hasting or Hastings, the son of a John of Hasting, who was apparently the John of Hasting
who held the lands of Bun in Forfarshire, and was a frequent witness to charters by King William the Lion to the Monks of Aberbrothoc, and to those of Cupar Angus. ......
When Sir David married Forflissa of Atholl is unknown, but he succeeded in her right as Earl in 1242, after the death of the young Earl Patrick. As Earl of Atholl he is a witness and a security to the obligation by King Alexander II. to fulfil his agreements with King Henry III., made at Newcastle-on-Tyne in August 1244."

from Scots Peerage ¹