I don't know if these are the right Wolfangers, but you may want to check Steuben County, NY. In the Village Cemetery in Wayland, NY, there are burials for Claude H. Wolfanger 1907-1953 and also for Howard F. Wolfanger 1905-1993. There is nothing listed for Sophia and Olida. There are also many Wolfangers in the neighboring town of Cohocton. I am not related, but I came across your post while trying to connect a Wolfanger to my own line.