I live in Marysville and occasionally have time to do a quick look-up that I find here.Not for sure if you have seen this on the web or not, but will post in addition to finding that Aaron was listed on the 1900 census as well.He was still in Washington Township, widowed, age 81.I did not discover his death date or cemetery.His family was from Hardin County, Mt. Victory area after first settling in Champaign.This will give you further places to search for family history.Here are the bios on Aaron and his brother, Washington with links to bios:
WASHINGTON RICHARDSON, farmer, P. O. Mount Victory, was born in Champaign County, Ohio, March 15, 1826. His father, Barnet Richardson, was born in Grayson County, Va, May 13, 1797, and his mother in Martinsburg, W. Va., October 14, 1800. His father came to Ohio in 1806, his mother in 1810, settling in Champaign County, where they were married, coming thence to Hardin County in 1835. They settled in Hale Township, where the father died January 20, 1867, and the widow February 4, 1882. They were the parents of thirteen children, nine of whom are living, six residing in this county, two in Logan Ccunty, and one in Union County, Ohio. At the time of his decease, Mr. Barnet Richardson owned 183 acres of land. which was all a wilderness when purchased, but it is now well improved and is a valuable farm. Our subjoct now resides on the old home farm, of which he owns six shares. He is a man of whom all speak well, and whose word is as good as his note. Like his deceased father, he is energetic and persevering, and is constantly engaged in improving his farm.
AARON RICHARDSON, farmer, P. O. Mount Victory, Hardin Co., Ohio, was born in Champaign County, Ohio, May 18 1819. His parents were Barnet and Elizabeth Richardson, both natives of Virginia. of a family of twelve children, eight are now living, viz.: Clark, Maria L., Washington G., Joshua, Mary, Elizabeth, Jane and Aaron. From his youth up, our subject has devoted his attention to agriculture, with the exception of ten or twelve years spent at carpenter work. On December 26, 1844, in Marion County, he married Maria T. Topliff, daughter of Horatio and Sarah Topliff, of Mansfield, Conn. By her he has one child, viz., Jasper N. Mrs. Richardson died May 23, 1849, and on December 21, 1856, he was married to Clarinda H. Young, who was born in Logan County, Ohio, in February, 1831; she was daughter of Eli and Nancy Young. To them have been born seven children-Maria T., James C., Benton R., Granville M., Wheeler A., Harriet E. and George W. (deceased). In 1857, he settled in Washington Township, this county. He has seen considerable of pioneer life, and endured many hardships. Mr. and Mrs. Richardson are both members of church ; they have a fine farm of 113 acres, on which are erected good and substantial buildings, making a pleasant home.