Ancestry of Richard Plantagenet & Cecily de Neville @ Fiarlef, Frialafr, "Firthleif", s of Finn or Finnr
The cited information was published by published by author, 1978 (Ref: Fiarlef, Frialafr, "Firthleif", s of Finn or Finnr) The author/originator was Ernst-Friedrich Kraentzler.