Seeking Matthew Thielen's/Thelen's roots

My grandmother, Albertina Agnes Thelen/Thielen was born in Lundington, Michigan December 1, 1872, to Matthew Thelen and mother unknown. They were of German decent, from information my mother gave me.Albertina or Agnes married Edward Joseph Loss (born in Naperville, Ill.) in Chicago, Ill. in 1893. Sure could use some help finding more info about the Thelens.