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.
Born 1839
From History of Morrow County and Ohio : containing a brief history of the state of Ohio ... a history of Morrow County ... biographical sketches, portraits of some of the early settlers and prominent men, (1880)
JOHN N. CAMPBELL, farmer; P. 0., Caledonia; was born July 9, 1839, in Marion Co.; is the third of a family of nine children, born to John and Lucinda Campbell, who have been long and favorably known in this county. John Nelson, in his early years, evinced an aptitude for farming and stock-raising. At the age of 24 he united his interests with Miss Maria P. Aye, born in 1845, and a daughter of W. S. Aye, one of Canaan’s staunch citizens, and early settlers. Subsequent to their marriage they moved to the Taylor farm, in this township, which he occupied for eight years; they then moved to the middle fork of the Whetstone, on the Strawman farm, which has been his residence ever since, having 186 acres of land, which employs his time, being engaged in farming and stock raising. They have a family of six children — Mary O., Melvin A., Morris W., Cora B., Hallie R. and Pearl L. J. Himself, wife and three children are members of the M. E. Church.
As printed in History of Morrow County and Ohio : containing a brief history of the state of Ohio ... a history of Morrow County ... biographical sketches, portraits of some of the early settlers and prominent men, (1880). See the original pages. Wording is the original; obvious scanning errors have been corrected, and a few may remain.
The printed record stops around 1880. We trace your line from there down to you, with every source cited.