Powys-Lybbe Forbears - Person Sheet
NameMary de Mentieth Countess of Mentieth [73, Mentieth article, Vol VI, pp. 137-8], [60, Albany article, Vol I, p. 78], [60, Mentieth article, Vol VIII, p. 666]
Deathbef 29 Apr 1360
GeneralSole heir. Sur jure countess. 9th "earl".