One was (probably) the son of Gerald/Gerard de Camville and Alice de Vere, lived in Oxfordshire, had no known brothers and two sons, Richard and Roger (who predeceased his brother and probably his father, leaving no heirs). This is the Stanton harcourt line, which terminated with a third(?) consecutive Richard who went off and died at the siege of Acre, leaving his sister Isabel and his sister's husband (Robert d'Harcourt) to inherit - which is how "Harcourt" got appended to the manor's name. (As far as I know it is *still* in the Harcourt family.)
The other one belonged to a different branch of the family (I have him as Walter's son, but the only near-certainty is that he did NOT have the same father as Richard of Oxfordshire), lived in Warwickshire, founded Combe Abbey, had a brother Hugh who predeceased *him*, and at least *four* sons starting with the Gerard de Camville who married Nicolaa de la Haye.This line lasted till the end of the 13th century before finally daughtering out.
It's all too easy to mix the two of them up, and even MedLands did so. But careful attention to who was where and in what family context proves there were two of him.