Hi there , i found this interesting debate, and i would like to join.
Well .... most of it, was interesting i did not read all, because i have disgusting monitor .
It seems to me, pretty clear that Rameses has a king ancestors, for any more information everyone can check Tanis stele.
About the Big brother of Rameses II i would say that there is no such a thing.
In a few words ...
This is an idea of D.Breadsted , on the north wall of big hypostyle hall in Karnak there is an inscriptions about Seti I military activity.There D.Breadsted sow, what he ment to be, a first and primary son of Seti I which is not Usermaatre. This theory was under question by Ed.Meier who sad that inscription of personage that accompany Seti I , is so bad preserved , that there will be need a lot of imagination to develop such an interesting theory about the primary brother.However , after more epigraph research, it was found that this is Head of marksmens named Mehi.
After all i also have an interesting question to ask.
What do you think, is was Rameses a hyksos ?
There is an interesting clues, that may support such an idea. I woud like to know what is your's opinion here.