Armstrong, Robert an Associate minister, was a native of Midholm, Roxburghshire, Scotland; but the date of his birth is not known. He was educated at the University of Edinburgh, and afterwards studied theology at Whitburn, under the Rev. Archibald Bruce. He was ordained to the ministry June 15, 1797; and shortly afterwards sent to the United States in answer to a call from Lexington, Ky., where he arrived in 1798. He was installed as pastor of certain churches in that vicinity April 23,1799. Here he remained until 1804, when he removed with his entire congregation to Greene County, O. They organized into two congregations Massie's Creek and Sugar Creek. Here he labored for seventeen years, when the charge was divided, and he labored only at Massie's Creek until Jan. 9,1821. From this time onward he had no pastoral charge, and died Oct. 14 of the same year. See Sprague, Annals of the Amer. Pulpit, IX, iii, 58.