British Kings and Queens @ p. 445
The cited information was published by 1998, Barnes and Nobles (Ref: p. 445) The author/originator was Mike Ashley.
References (3)
Parent Source:
British Kings and Queens
Individual:
Earl Hlodver Thorfinnsson of Orkney
Individual:
Earl Sigurd ("the Fat", "the Stout" "Digri") Hlodversson II of Orkney