My German friend and collaborator Jörg Schrick has a friend Dieder Sommerfeldt who found the following record:
Carl Friedrich SCHMIDT 24 (geb 1835) Vater: Johann Ludwig SCHMIDT oo 1859 in der Evangelischen Gemeinde in Schönlanke (Trzcianka) Wilhelmine WINKELMANN 23 (geb 1836) Vater: Chistian WINKELMANN
This is the marriage record for my 3x great grandparents. It says they were married in the town of Schönlanke, Posen, Prussia [which is called Trzcianka, Poland today] in 1859. This is only 8 miles from Gornitz, the town where the Schmidt family was living when they came to the US in 1892.
Here is the original document, sent to me by Lukasz Bielecki of the Posnan Project:
Translation: Place: Carolina Number: 23. Month: October Day: 30th Officiating: Jähnike (reverend ?) Names: The bachelor Carl Friedrich Schmidt, son of the deceased Kolonist Johann Ludwig Schmidt from Modderpfuhl to the maiden Wilhelmine Winkelmann, daughter of the Kolonist Christian Winkelmann from Carolina. Previous marriages: Neither him, nor her Parents or legal guardian: Him: Mother, Her: Parents Religion: Protestant Ages: 24, 23 Bans of Marriage: October 9th, 16th, 23rd. Consent: He: his own Her: consent of the father Place of marriage: Schönlanke.