Hamelin Ii de Warenne

I'm beginning to wonder if Hamelin II existed as his father would have been in his 70's at deat in 1202 and the only statement I can find is that Hamelin II died young the same year as his father. That is my curator comment of 2012 and I now can't find anything to back it up so am now doubtful.

There is no mention of him in Medlands which, if he existed would be a surprising omission.