Source: Beers 1883 Union County History
"AARON B. ROBINSON, merchant and attorney, Marysville. The subject of this sketch is a lineal descendant of Union County's earliest pilgrims, and was born in Darby Township November 10, 1833, and is a son of John W. and Elizabeth (Mitchell) Robinson, natives of Pennsylvania. Judge David Mitchell was the first to settle in the limits of Union County, some time prior to 1800. He became prominently identified with its interests, and occupied the chair of Associate Judge a number of years.

Aaron B. Robinson was reared on the homestead farm, and learned to labor with his hands. He acquired a primary education in the schools of this city, and entered Jefferson College at Cannonsburg for the completion of his collegiate studies. In the Junior year, his health failed him, and he was obliged to return home. Subsequently, he began the study of law, and in 1858 attended the Cincinnati Law School. He was admitted to the bar the following year, and began the practice of his profession in connection with his brother, Hon. J. W. Robinson, in that city. He volunteered his services to the Union army during the rebellion, and entered the service on the 22d day of August, 1862, as Captain of Company I, One Hundred and Twenty-first Regiment Ohio Volunteer Infantry, and participated in most of the battles in which the regiment was engaged. He was wounded on the field of Chickamauga, Ga., September 19, 1863, and sent home, where he remained three months, when he returned to his regiment and served through to the close of the war. He received promotion to Colonel of his regiment, but was mustered out as Lieutenant Colonel June 17, 1865. Returning to peaceful pursuits, he joined his brother in the manufacture of woolen goods in a mill located near Military and West streets. The brothers did an extensive business in this establishment, which closed in 1880, after a long and successful career. In 1879, Mr. Robinson erected the large and commodious store of his present premises, where he carries on an extensive trade in dry goods, carpets, etc He is at this time, July, 1882, serving his second year as Representative to the Ohio Legislature, to which he was elected in 1879. Mr. Robinson was joined in marriage in 1868 to Miss Keziah, daughter of Alfred and Harriet Wilkins, whose family history appears in this portion of the work. Four children born to this union are all living, viz.: Harriet E., E. Gertrude, Martha E. and Alfred J. Mr. Robinson is a member of the G. A. R., and the family are members of the Presbyterian Church."