Nielsen Hayden genealogy
Ancestors of Duncan de Erregeithill
┌── Gille-Adomnain
┌── Gille-Brigde
┌── Somerled, King of the Hebrides ( - 1164 Renfrew, Renfrewshire, Scotland)
┌── Dugal
│ │ ┌── Godred Crovan
│ │ ┌── Olaf of Man, King of Man and the Isles ( - 1153)
│ └── Ragnhild
│