The following Biographical sketch was copied from the book "HISTORY AND BIOGRAPHY COUNTIES OF WHITE AND PULASKI, INDIANA. Historical and Biographical. Illustrated. Chicago; F.A. Battey & Co., Publishers. 1883. page 763, Tippecanoe Township, Pulaski County, Indiana.
"OLIVER P. WARREN was born in Stark County, Ohio, January 10, 1833, and is one of the twelve children born to JOSIAH and FANNY (KISNER) WARREN, of whom there are living the following: CATHERINE, HENRY, LOVISA, JOSIAH, FANNY, ANDREW, WILLIAM and OLIVER. About 1834, the father moved his family to Richland County, Ohio, and there lived about seventeen years; in 1851, they came to this county, remaining about two years; then OLIVER and his mother moved to Wayne County, Michigan, where they lived two years and then came back to Pulaski County. OLIVER P. WARREN has paid his chief attention to farming all his life. In 1876, he was elected County Commissioner and is now serving a second term. He has been married four times. To his first marriage there were no children born; to the second there were four, and to the third, two. His fourth marriage was on Easter Sunday, 1881, to MARY JOHNSON. He now lives four miles west of Monterey on his excellent farm of 273 acres, almost the whole of which he has earned, cleared and improved since his return from Michigan. He has a fine frame dwelling and comfortable and commodious stables, and pays considerable attention to the rearing of cattle, sheep and hogs, besides raising general crops. He is a member of the Christian Church, and enjoys the respect of all his neighbors."