George has encouraged me to post my research challenge here. Hopefully the group can guide me as to what steps I have overlooked, or can take next!
I don't write as eloquently as George but I have tried to compile the known facts in as coherent a manner as possible. I'll post them here (following George's example for his Geder ancestors) as replies to this post so that the story can be broken down into smaller bits.
Any help would be greatly appreciated, and feel free to ask questions if something I have written is not clear.