I looked in my churchbook at Neukirchen parish and see the birth entry of your Carl Finck.He was born on 18 Sep 1859 at Penzin, Mecklenburg-Schwerin, to Johann Joachim Finck and Elisabeth Sophia Theilck. He was bapitzed at the Neukirchen church on 25 Sep 1859 as Carl Friedrich Martin Finck. He has a note showing immigrated to America in 1884.
You may already have this since your dates are exact.
My KRUSE came from the same parish of Neukirchen and also married into the THIELCK family, so we could be related?