I don't think we have the same Thomsen family. My grandfather was Severinus Johannsen Thomsen and was born in 1868 in schleswig-Holstein, Germany. It was under German control at that time. His father was Mathias Madsen Thomsen and his father was Thomas Mathiasen and his father was Mathias Madsen. They lived in Haderslev,Fros,Sonder Hygum,Denmark. My grandfather settled in Troy, New York which is upstate, NY.
If any of these names sound familiar please contact me. My email address is firstname.lastname@example.org