It is said that Isaac died in Cincinnati, OH, but he is in the 1860 and 1870 censuses of Kenton Co., KY, and his widow is in the 1880 census of Kenton Co., KY, so it seems more likely he died in Kenton Co. In the bio of their son, Walter Ferry STRAUB, it is said his parents were living in KY, just south of Cincinnati (i.e., Kenton Co., KY) in 1876.
1860 Census, Martin Dougty & Mary Reed b. Ireland, farm hand and domestic helpers
1870 Census: Fountain, S.[arah?] and John Jones living with Isaac as Farm laborer and domestic Servants, born in Virginia, KY, and KY respectively
Possibly McGinnis?
1880 Census, listed as domestic helpers: Oreich Eucher, Alice Tone, and Blanche Johnson, b. in Switzerland, and KY, KY, respectively