My great-grandfather's death certificate arrived today. Samuel Wilson was born 30 August. While this says 1874, his naturalization documents say 1871. His wife, right after his death, fille this form out. He filled out his naturalization papers. So I'm going to assume that he was born in 1871.
He died 1 May 1946 in Kenmore, NY, of prostate cancer.
A couple new things from this document. One is his social security number. I can use that to order his social security application to see if that has some more information. The other is his mother's last name, or at least a possible last name. Some records say it's Elizabeth Watts. This says Elizabeth Gilliland or Gilliband.