Fighting Kings of Wessex @ p 191, Olaf Kuarán, no title, s of Sigtryggr Gale, no mother
The cited information was published by Combined Books, Conshohocken, PA, 1996 (Ref: p 191, Olaf Kuarán, no title, s of Sigtryggr Gale, no mother) The author/originator was G.P. Baker.