This is the 1879 signature of Conrad Haase, my step-3rd-great-grandfather. It was contained on a mortgage made out by his step-daughter and son-in-law, Frances and John Michael Trautvetter. Their mortgage was dated 1 Feb 1870 and was paid off in 1879. Frances would have been nineteen when she signed the mortgage, John would have been thirty. Tracking John's deeds, especially those when he purchased the property and mortgaged part of it from his in-laws, has been particularly interesting and I've learned a few things when I thought I already pretty much knew everything.
Down the road this will appear in Casefile Clues.