Hi Deborah, I looked at some of your family trees on One World Tree and then I searched different variations for Theodore and Christiana on Ancestry.
In 1880 Census for Youngstown, Mahoning Co. Ohio there is a Christina Dollman, widowed, mother in law, living with Jacob Naegele and wife Hattie with two daughters.Christina was born in Wurttemberg.Could this be your family?
I find this interesting since my dad left PA and was in Youngstown, Mahoning Co before he came to Canada in 1905.
Did you search Naturalization records and ship lists? Helen