Robert de Vere, 3rd Earl of Oxford, was born after 1164 to Aubrey de Vere, 1st Earl of Oxford (c1115-1194) and Agnes of Essex (c1151-c1212) and died 1221 of unspecified causes. He married Isabel de Bolebec (1165-1245) 1207 JL . Charlemagne (747-814)/s.
|Offspring of Robert de Vere, 3rd Earl of Oxford and Isabel de Bolebec (1165-1245)|
|Hugh de Vere, 4th Earl of Oxford (c1210-1263)||1210||December 1263||Hawise de Quincy (-aft1273)|