I have a William Dumond that I'm tracking, but he was a few generations earlier and also in Seneca Co. NY. I found a will listed in Fayette, Seneca Co. NY. of William Dumond, deceased on 1 Mar 1813. He had a wife Rachel, sons David, Wm. T., Herman, Joseph and daughters Temperance Dulles, Catherine (Caty) Dumond and Eliz. Dumond, plus grand-daughter Rachel Rosierants. My Catherine married a George Stuck. I don't know if this is remotely a connection, and I don't know from whence they came.