His death certificate records William Isaac Ferguson, age 81 years 9 months 22 days, birthdate blank, born in Ky, died 16 Oct 1937 in Crockett, Morgan Co., Ky, married, husband of Mary Ferguson, father Richard Ferguson, birthplace blank, mother’s maiden name Ison, cause of death no physician suppose heart failure, informant Hady Ferguson, burial in Ferguson Cem.

The age at death would imply a birthdate of 25 Dec 1855.

Lawrence Co., Ky birth report to the state auditor for 1857 records Mary Scaggs, born 11 Mar 1857, father Lewis Scaggs, mother’s maiden name Sarah Gillem.

She was listed as only age 1 in the 1860 census, though, and age 11 in the 1870 census, and age 20 in the 1880 census, and as age 41 born March 1859 in the 1900 census, so I suspect that she was really born in 1858. These annual reports to the state auditor were compiled in the spring, with the intention to report all the births that took place in the county during the preceding year, but they often accidentally included some births that actually occurred early in the year that the report was submitted.

Her death certificate records Mary Ferguson, age 83 years 6 months, born 11 March 1858 in Kentucky, died 11 Sep 1941 in Crockett, Morgan Co., Ky, widow of Isaac Ferguson, father Louis Skaggs, mother’s maiden name Sallie Gilliam, cause of death senility, informant Hady Ferguson, Moon, Ky, burial in Moon, Ky.

Lawrence Co., Ky marriage records list the marriage on 22 Apr 1875 of Isaac Ferguson, age 20, born in Morgan Co., residence Floyd Co., both parents born in Morgan Co., to Mary Scaggs, age 16, born in and resident of Lawrence Co., father born in Lawrence Co., mother born in Harlan Co.

1880 census of Morgan Co., Ky, Elk Fork district, enumerated 10 June, lists on p. 15 as family #99/100:
Ferguson, Isaac, 23, farmer; Mary, wife, 20; Nancy E., dau, 3; Leander, son, 2. All born Ky Ky Ky.

1900 census of Morgan Co., Ky, district 5, enumerated 11 June, lists on p. 12A as family #182:
Ferguson, Isaac, 45, b. Dec 1854, farmer; Mary, wife, 41, b. Mar 1859, married 25 years, mother of 7 children, 6 living; Sarah, dau, 15, b. Aug 1884; Susannah, dau, 13, b. Oct 1886; Mary A., dau, 10, b. Mar 1890; Haden, son, 7, b. Aug 1892; Leander, son, 21, b. Sep 1878; Manda, dau-in-law, 17, b. Jan 1883, married 9 months, 0 children; Skaggs, Susan, 5, boarder, b. Aug 1894. All born Ky Ky Ky.

Their daughter Nancy Ellen is 4 households above with her husband John E. Ison.

Susan Skaggs (full name Phoebe Susan Skaggs) is the daughter of Mary’s brother Lewis L. Skaggs and his first wife Susan Ison, who died one week after the birth. She is thus Mary’s niece.

1910 census of Morgan Co., Ky, Paint precinct, enumerated 3 May, lists on p. 12A as family #153/168:
Ferguson, Isaac, 54, farmer; Mary, wife, 51, first marriage for both, married 35 years, mother of 8 children, 7 living; Mary A., dau, 20; James H., son, 17; Angie M., dau, 9; Skaggs, Susan, niece, 15; Cox, Roscoe, nephew, 7; Ferguson, Annie E., granddau, 7. All born Ky Ky Ky.

Roscoe Cox is the son of . Annie Ferguson is the daughter of ....

1920 census of Morgan Co., Ky, Paint precinct, enumerated 12 Jan, lists on pp. 2B-3A as family #24:
Ferguson, Isaac W., 64, farmer; Mary, wife, 60; Mary A., dau, 29; James H., son, 27; Mae, dau, 19; Skaggs, Susan, niece, 25; Cox, Rosco, nephew, 16. All born Ky Ky Ky.