I have just picked up your thread and am currently looking at an Abraham Altenacker who appears to have had several names added over the years. The time scale appears to be from about 1796 in Germany (?Bavaria) to 1900+ in London, UK. The descendants are still about not too far from London but I believe they have no knowledge of the family's origins. I am hoping to put that right. My children are direct descendants of this family but I am now divorced from it. A name that seems to have evolved from Abraham is Charles Lyons Leopold Altenacker Burchell,
Hoping to have some contact with you soon.