Your Joseph and Thersia are buried in Mt. Olivet Cemeter in Detroit, Mi.
Springman, Joseph W. 4/4/1945 Mt. Olivet, Section 39, Lot 481, Space 8
Springman, Theresa 5/23/1950 Mt. Olivet, Section 39, Lot 481, Space 9
My Springmans hail from Germany but I can't make a connection to William Springman.My Springman's are all Franks (there are five of them, my dad being Frank Springman V).They dropped the last "n" off their name around about the time the second generation was born in the U.S.The ones that came over from Germany kept the double "n" but their children dropped the extra "n."