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 1836
From The History of Clark County Ohio, (1881)
REUBEN W. LEFFEL, farmer; P. O. Springfield; son of James P. and Elizabeth Leffel; was born in this county May 9, 1836; he lived with his parents until 1862, when, he moved to his present home. He was married Jan. 21, 1858, to Rachel, daughter of John and Mahala (Myres) McClelland. They have four children, viz, Adda M., Hester A., Charles R. and Stella E. Mrs. Leffel was born in Greene County July 28, 1832; her parents were natives of Kentucky, and came to Ohio in an early day. Mr. and Mrs. Reuben W. have a pleasant home and a fine family of children; the girls take great delight in ornamenting the home to make it not only cheerful and pleasant, but attractive. Mr. Leffel engaged largely in farming and stock raising, and makes a specialty of breeding Jersey cattle; he is a member in good standing of Springfield Lodge, No. 33, I. O. O. F.; also a Patriarch of Mad River Encampment, No. 16, I. O. O. F.; he and his good wife are consistent members of the Lutheran Church.
As printed in The History of Clark County Ohio, (1881). See the original pages. Wording is the original; obvious scanning errors have been corrected, and a few may remain.
The printed record stops around 1881. We trace your line from there down to you, with every source cited.