Parkinson, William a Baptist minister, was born in Frederick Co., Md., Nov. 8, 1774; his early education was limited. After following commercial pursuits for a while. he opened a school in 1794 or 1795 at Carroll's Manor, Frederick Co., and was there ordained April 1, 1798. In 1801 he was chosen chaplain to Congress, and was re-elected for two successive years. In April, 1805, he became pastor of the First Baptist Church of New York, where he continued until his health having become too much impaired to permit of his remaining in charge of so large a congregation, he took the pastorate of the Bethesda Baptist Church in 1841. He died March 10,1848. — Mr. Parkinson published A Treatise on the Public Ministry of the Word (1818); and A Series of Sermons on the Thirty-third Chapter of Deuteronomy (1831, 2.vols. 8to). See Sprague, Annals of the Amer. Pupit, 6:362.