Eustace married Earl Geoffrey Mandeville ESSEX, III, son of Earl Geoffrey De Mandeville ESSEX, II and Countess Rohese De Vere ESSEX, in , , England. The marriage ended in divorce. (Earl Geoffrey Mandeville ESSEX, III was born about 1142 in Rycott, Oxfordshire, England and died on 21 Oct 1169 in , , England.)
Ancestral File Number: 8XJV-NV.