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 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)
ANDREW MITCHELL, saw-mill; Andrews; was torn in this township, Sept. 29, 1836, and is the seventh of a family of eight
4L children, born to Daniel and Margaret (Howden) Mitchell; the former born Feb. 16, 1793; the latter April 1, 1801; both in Washington Co., Pa., where they were married Jan. 1, 1818, and emigrated to this region at an early period of its history. Darnel Mitchell died Jan. 14, 1879, at the homestead, one mile east of Williamsport; Andrew was raised upon the farm, where he remained until his 24th year, when he married Maria Wilson, born April 25, 1838, daughter of James Wilson, of Knox Co.; after marriage he located one-half mile north of Williamsport, where he engaged in the saw-mill business, where he continued a short time, then engaged in the grocery business at Williamsport for two years; he then engaged in farming four years, near the town of Williamsport; he then located permanently a short distance north of Williamsport, where he has since been engaged in running a saw-mill, to which enterprise he gives his entire attention; has five children — Frederick, William, Clyde, Florence and Herbert.
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.
Their biographies name Andrew Mitchell: David K. Mitchell (b. 1835)
The printed record stops around 1880. We trace your line from there down to you, with every source cited.