Hi~
I'm a descendent of Jacob Senn and Eliza...more specifically, their son Emil Senn. I think most of your information is correct, but I think Jacob Senn was born before 1861 because in a book called, "Geschichte Von Fountain City Wis.:Stories of Fountain City", it states that Jacob Senn settled in Fountain City from Switzerland in 1855. I would appreciate any information you have on the Senn family.