I have found another Lewis Douglas(b1847)in the 1870 census of Greenup County as a son of Thomas Douglass Sr. (b1804) & Cassa Douglass (b 1808). This would have made Lewis 53 yrs. old when he was the grandfather to Homer Douglas ( b 2/11/1900- d 8/17/64).
Census info as follows:
Inhabitants in Precinct No. 5 in the County of Greenup, State of Kentucky, 13th day of July, 1870. P.O. Hunnewell Furnace.
352/348 Thomas Douglass Sr. (66) is listed as a farmer and Cassa (62)is listed as keeping house. The following are listed in this household: Charles (42), Richard (26), and Lewis (23) are listed as iron ore workers; Sophia (21) listed as working at home; and John (11).
Makes more sense than the other Lewis Douglass (b 1867) son of John Wesley Douglass ( b 1834) and Lucinda Collins Douglass (b 1833).
P.S. I e-mailed you direct with another response before I realized I could have responded this way. Please look at it also.