Kind(eren):
I am not sure whether Todd had 3 or 4 Ranulf de Warennes of Whitchurch preceding William de Warenne of Whitchurch. It doesn't really matter. The eldest was a Domesday tenant, and brother of William I de Warenne, Earl of Surrey; and the youngest died before 1176. Going by 30 years per generation, it looks like 4 Ranulfs. Since they were all named the same, I don't think anyone could necessarily tell when one ended and the next began.