I'm seeing more and more family trees where there is great mixing of different Sommer's families. I wish there was an official place to register our family lines so this mixing-up wouldn't happen because I think the mixing-up is a damaging thing to all of us. Sigh. All I can do is try to share my research and perspective and hope that other serious researchers will care as much as I do about getting it right. Let's put our heads together and see if we can untangle things!
Meanwhile, here's an article I just wrote with more specifics about the particular question of which Jacob Sommer descended from Freistett, Germany and lived in colonial Philadelphia - Jacob, the Judge, 1758-1827, or Jacob, the Carriage-Maker, 1749-1817?
Comments are welcome!