Tuatha de Danann

In our timeline, the Tuatha de danann are part of Irish mythology. But, in a universe where magic exists and works, it may be that they really existed and were the ones who passed on the Talent to the Irish and Scottish ancestors of Sean O'Lochlainn and Duncan, Lord Duncan respectively.

Master Sean says: ‘It’s in the blood. Some attribute it to the Dedannans, who passed through Scotland before they conquered Ireland three thousand years ago, but, however that may be, the Talent runs strong in the Sons of Gael.'

Since 1199 is the point of departure for this universe, the original source material for the Dedananns in irish mythology would exist in both universes, so further information can be found there.