Lineage & Ancestry of HRH Prince Charles, Prince of Wales @ Vol I p64
The cited information was published by Skilton, Edinburgh 1977 (Ref: Vol I p64) The author/originator was Gerald Paget.
References (2)
Parent Source:
Lineage & Ancestry of HRH Prince Charles, Prince of Wales
Family:
Roger De Beaumont & Adeliza (Adeline) De Meulan