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 1800
From The History of Clark County Ohio, (1881)
HENRY SHELL, farmer; P. O. Christianburg. The gentleman whose name stands at the head of this sketch is one of the old pioneers and stanch men that have made the Buckeye State what it is to-day. He was born in Montgomery Co., Va, Feb. 1, 1800; at the age of 11 years, he came to Ohio with his parents, and settled in Elizabeth Township, Miami County. March 6, 1823, his marriage was solemnized. with Mary Peilliman. They have had fourteen children, of whom five are now living, viz: Eliza, Henry, Elizabeth, Francis M. and Louisa, who have always remained at home with their parents. Mr. Shell purchased the beautiful farm where he now resides in 1830, in an unimproved state, and the improvement that has since been added is the energy and indomitable will with which he is possessed. His good and industrious wife died Jan. 16, 1873, at the advanced age of 72 years. Her religious views were identified with the German Baptist Church. Mr. Shell, in politics, is a Democrat. He and his daughter, Louisa, are members of the Christian 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.
Their biographies name Henry Shell: Tunis Ferman Mumford (b. 1860)
The printed record stops around 1881. We trace your line from there down to you, with every source cited.