Alix de Preaux

Alice, widowed Countess d'Eu, made a donation in honor of the marriage of "Alice, daughter of Peter de Preaux, my brother" - but whom she married, or whether this was for a marriage contract that was never fulfilled, is unknown. It is also unexplained why Alice d'Eu referred to Peter as "my brother" (see theory that Mathilde d'Anjou was married three times).