Hopefully, you are still at the same e-mail address. I have information on the two people you're looking for and their descendants (down 4 generations). To begin with:
Wilhelmina Winkle, b: 22 Jun 1847 in Meckelnberg, Stralitz, Germany who married on 12 Mar 1869:
Henry F Frerking, b: 02 Feb 1833 in AusChen, Germany

Let me know if you would like more information.

Georgine Herd