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 1857
From The History of Clark County Ohio, (1881)
ED C. LEFFEL, manufacturer, Springfield. This young enterprising manufacturer is the son of James (the inventor of the water wheel) and Mary Leffel. He was born in the city of Springfield, Ohio, July 4, 1857; he received his primary education in the public school of this city, then attended school in New Haven, Conn.; was also a student in the Highland Military Academy, of Worcester, Mass. He was married, Nov. 7, 1877, to Miss Lillian G. Horr, daughter of Calvin and Elizabeth (Morgan) Horr, who were one of the first families of Springfield. One bright, promising boy, James Calvin, has blessed the home of Ed C. and Lillian. In July, 1880, Mr. Leffel began the manufacture of the Croft Wind Engine, an invention which has been received by the public with great favor, and under Mr. Leffel's management bids fair to be a profitable invention to the manufacturer, as well as a blessing to the public, by supplying a long felt want. Mr. Leffel, although a. young man yet, has seen much of the world, having visited all the principle cities of the East. His handsome brick residence is located on South Limestone street.
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 Ed C. Leffel: Warren N. Carter (b. 1856) James Leffel (b. 1851)
The printed record stops around 1881. We trace your line from there down to you, with every source cited.