Lawrence R. Unser (my great-grt grandfather was born in Baden, Germany in 1825. I do not know who his parents were. He was in this country by 1858 as that's when there is a record of his marriage (Ohio)to Anna Isenhath. He died around 1879 in Michigan.
The trail stops with him. My grandmother is/was Mabel Maude Unser(,Gratiot, Michigan).