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 1850
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)
AARON SEIF, farmer; P. O. Galion; is an energetic and promising young farmer, and was born Aug. 11, 1850, in Morrow Co., Ohio; he is the sixth of a family of twelve children, and his father, Jacob Seif, has his history among the first men who are now living in this section. Aaron, unlike many other young men, did not leave home at the earliest opportunity, but has always lived on the old farm, to which he is strongly attached; he lived with his father till his marriage, and then settled on a portion of the old homestead, which he is improving and making attractive as fast as possible; he was united in marriage May 31, 1877, to Mary Ricker, daughter of Peter and Dora Ricker; she was born Aug. 27, 1854, in Crawford Co., Ohio, and is of German descent. This happy union has been blessed with two children, twins, named Minnie and Tillie. Mr. Seif and wife are consistent members of the German Lutheran Church.
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.
The printed record stops around 1880. We trace your line from there down to you, with every source cited.