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Kentucky Genealogy and Biography, Volume 8B – Battle – Perrin – Kniffin, 1886.
LYTTLETON B. COOK, M.D., a native of Russell County, Ky., was born December 8, 1855, and is a son of Edmund and Mary (Simpson) Cook. Edmund Cook was born in North Carolina in 1810, and is a well-to-do farmer in Russell County, Ky.; he is a son of John Cook, who married Mary Green of the family of Gen. Green and moved from North Carolina to Woodford County, Ky., in the early settlement. Mary (Simpson) Cook, born 1818, a native of Kentucky, is a daughter of Avington and Lucinda (Payne) Simpson. Dr. L. B. Cook is the eighth in a family of nine children, viz: Dr. John Loy, deceased, Dr. A. S.. Edward Green, deceased; Dr. William H., Lucinda Frances, Mary E., C. Wayne, L. B. and Lee V. Dr. L. B. Cook received his education in the common schools and at the College of Arts, Lexington, Ky. He is of German origin, his great-grandfather, Christopher Cook, and wife, emigrating from Germany to Orange County, North Carolina, before the Revolutionary war. He read medicine under his brother, Dr. A. S. Cook, and attended medical lectures at the University of Louisville, Ky., where he graduated in 1879. He subsequently located at Burnside, Ky., where he has since resided. November 21, 1883, he married Lelia B. Owens, a native of Lincoln County, Ky., and a daughter of Samuel Owens. One child has been born to them, Anna Lee. Mrs. Cook is a member of the Christian Church. Dr. Cook is a Presbyterian, a Master Mason and a K. of H. Politically he is a Democrat.