In the book's own words, not ours, with obvious scanning errors fixed. Families often supplied these stories to the publisher, so check key dates.
From History of Fayette County, Ohio : her people, industries and institutions (1914)
GRANT DeWITT.
One of the most prominent stock dealers of Washington C. H. is Grant DeWitt, who was born in this county during the Civil War. He is engaged in farming, the buying and shipping of straw and has owned and developed one of the best racing horses which ever went out of Fayette county. Still later he engaged in the buying and shipping of cattle and is now engaged in this particular line of activity.
Grant DeWitt, the son of John and Martha (Rittenhouse) DeWitt, was born in Fayette county, Ohio, four miles south of Washington C. H., on the Chillicothe pike, July 7, 1862. His parents, who were natives of Washington C. H., and Ross county, Ohio, respectively, reared a family of seven children: Mary Jane, the wife of James Kearney, deceased; Arvilla, deceased, who was the wife of Christopher Parrett; Nellie, the wife of Charles Bowdell, of Hartford City, Indiana; Grant, of Washington C. H.; Frank, also of Washington C. H., and two who died in infancy, the eldest and youngest, both girls.
John H. DeWitt was reared on a farm four miles east of Washington
As printed in History of Fayette County, Ohio : her people, industries and institutions (1914). See the original pages. Wording is the original; obvious scanning errors have been corrected, and a few may remain.
The printed record stops around 1914. We trace your line from there down to you, with every source cited.