What Sources validate this N.N., A Lowland Woman as a wife of Somerled, “King of the Isles”, and mother of Gall "the Foreigner" mac Somairle?
According to the footnote here, it’s in The Book of Clanranald in Reliquiae Celtica, Vol II, page 157
https://books.google.com/books?id=f10JAAAAIAAJ&pg=PA57&lpg=...
And if we track that down we get to. https://digital.nls.uk/early-gaelic-book-collections/archive/76513864
And the information isn’t there.
I will wrassle this some more in the morning, but so far I’m finding it in antiquarian volumes, and haven’t found the source.