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 1837
From The History of Warren County, Ohio (1882)
ERASTUS COX, farmer; P. O. Mason; is a son of William and Elizabeth Cox: he was born on the old home farm in the year 1837; his marriage was celebrated in 1859 with Hannah, daughter of Henry Hageman, who has borne him three children, viz., Willie H., John W. and Emma B. Mr. C. owns 64 acres of land, which is in cultivation and well improved. He is a member of the Mason Horse Rangers, to which he has belonged for about sixteen years. His father, William Cox, was born in New Jersey in the year 1807. He (William Cox) has been twice married — first, in 1831. to Elizabeth Carter, who bore him one child, viz., Livingston. Mrs. Cox died in 1833. His second marriage was consummated April 4, 1$34, with Elizabeth Wise, who bore him eight children, six living, viz., Louisa, Erastus, Richard, Lydia, Dallas, Margaret; Thomas and William, deceased. Mrs. Cox died April 1, 1876, aged about 68 years. Thomas J., son of William Cox, enlisted in 1861 in Company A, 69th O. Y. I., and died in the hospital at Murfreesboro in 1862, aged about 23 years. His remains were brought home and are interred in the Mason Cemetery, where a monument marks his last resting-place.
As printed in The History of Warren County, Ohio (1882). See the original pages. Wording is the original; obvious scanning errors have been corrected, and a few may remain.
The printed record stops around 1882. We trace your line from there down to you, with every source cited.