Wife of Giles William Duncan. Mother of Frank, Patrick and Ben Duncan. Maiden name wasDuncan, the daughter of Isaiah and Nancy (Murdock) Duncan. Died after 1910 census which lists her living with her son Ben and family on their property in Harrison Twp, Clay County, Indiana. A photograph of her exists with her granddaughter Waneta Snellenberger which must have been taken about 1913 or 1914. No death certificate issued for Mary A Duncan in Clay County between 1912 and 1920. There is a death certificate for a 73-year-old Mary Ann Duncan who died in Marion County, Indiana in 1917, but without seeing the the complete certificate, it is unlikely that it is her.