I thought I'd restart this thread since it needs bumping up.
You gave a huge amount of info there - can you sum it up? I have lost my original link regarding Ascelin from Adal, but I believe the reference given there was ODEFN.. I thought your research seemed a lot more tantalizing, and thorough.
What did you decide were the most likely origins? Or are you still waiting for answers.. I got confused.. all those similar names.