Hi, I am answering an old post, so I hope you get this. I have Sophia Catherine Oltmanns b. 9/6/1842 d. 3/6/1906 bur. Florida Chapel Cemetery, Round Top md. Johann Friedrich Knutzen 9/18/1868 in Fayette County. Two children - Meta md. George Meinen and John who married Helena Von Minden. I have not been able to determine who the parents of my Sophia Oltmanns are. Have you found her in your research?