My great-grandmother, Mildred G Trumbull Miller, married Diedrick C. Anstett b.1903 d.1979. It was the second marriage for both of them and they had no children together, but he had a son from his first marriage, Dee Anstett. I'm not sure if Diedrick was born in Steuben county or not, but Mildred Trumbull lived in Steuben county all her life so they had to have met there. I can't say for certain if he is descended from your Anstetts or not though.