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Kentucky Genealogy and Biography, Volume 8B – Battle – Perrin – Kniffin, 1886.
O. S. DEMING, an attorney-at-law of Mt. Olivet, Robertson County, Ky., is a native of Osego County, N. Y., was born December 22, 1838, and is a son of Captain David and Almira (Sage) Deming, natives of New York and Massachusetts respectively, and of English and Irish origin. O. S. Deming was educated at Waterford (Penn.) Seminary, going through a scientific and classical course. He read law in Warren, Penn., and in 1860 came to Mt. Olivet, Ky., where he taught school awhile. In 1863 he entered the United States service, and served for thirteen months on a gun-boat in the Mississippi River fleet, as Gunner’s Mate. He then returned to Kentucky, resumed the study of law, and in 1868 was admitted to practice. The same year he was elected county attorney of Robertson County, and was the first one, the county having been erected in 1867. In 1872 he was elected county judge, served four years and was re-elected, but resigned. In 1876 he was an elector on the Hayes Presidential ticket, and in 1879 was the Republican nominee for Lieutenant Governor of the State of Kentucky. He married Miss Leona C. Rigg, of Bourbon County, and is the father of four children, viz: William C., David S., Thomas H. and Ada P. Mr. Deming owns about 800 acres of land, and is erecting one of the finest and most spacious residences in Robertson County. He is a Freemason and a member of the Christian Church.