I don't know if you are aware that this Jacob Schneck line in Milwaukee, WI is included in my (co-compiler) book "Im Schneckengang (At a Snail's pace)". We did not know that he came from Breitenholz, but that is reasonable since another immigrant to Indiana came from there, and there are many Schnecks in the area west of Tuebingen, Wuerttemberg (villages such as Hagelloch, Entringen, etc.). We have Jacob's wife's name as Christina "Koles", according to some descendant's information, but this may be a confusion with son Jacob's wife Katherine Kaul! Jacob's 4 children were: Jacob, b. 1843; Frederick, b. 1853; Caroline; and Amelia (similar to what you have).