Powys-Lybbe Forbears - Person Sheet
Notes for Agnes de Percy
Rosie Bevan in her article “Keeping it in The Family” in Foundations pub by FMG aqs Vol 5 in May 2013 states that the evidence is very sztrong that Agnes was the daughter of Henry de Percy and Isobel de Brus.
I have accordingly placed Agnes as the daughter of Henry de Percy and Isobel de Brus.