Lineage & Ancestry of HRH Prince Charles, Prince of Wales @ Vol I p 65, s of Guillaume IV Taillefer Ct de Angoulême & Marguerite de Turrenne
The cited information was published by Skilton, Edinburgh, Scotland, 1977 (Ref: Vol I p 65, s of Guillaume IV Taillefer Ct de Angoulême & Marguerite de Turrenne) The author/originator was Gerald Paget.