Seth Sr. d. 15 Apr 1813, one day after his will was written mentioning deceased son Seth who is said to have died 8 Oct 1810.
[Note: Source:Cummington, Hampshire, Massachusetts, United States. Vital Records of Cummington, Massachusetts, 1762-1900, p. 242, says Wilder, Seth, d. Oct. 8, 1810 [Oct. 8, 1814, age 74, P.R. 1]. The basic record could be either father or son, and it corresponds to what is given for the son. The second source, PR1, gives an age at death that could only be the father. However, the coincidence of the father and son both dying on Oct. 8 is highly unlikely, and given the TAG article, it seems more likely this used the son's death date, but adjusted it to occur after the father's will. More sources would be useful.]