Record of death from "Iowa, Deaths and Burials, 1850-1990" via Family Search.
Shows that wife was still alive at the time of death, his father was James Safley, born in Scotland, and mother's name is "Margertte". Date of birth shows 28 Feb 1842. Tombstone says 1843, so sticking with that officially.
Accessed 17 Dec 2014.
abt. 17 Dec 1906