Reuben C. Lemmon was elected Lucas County Prosecutor and served during the early years of the Civil War (1861-1863). Born in 1825 to a farming family in Maryland, Lemmon later moved to Seneca County, Ohio where his family prospered due to the rich farming climate and soil.

Lemmon studied law in both New York and Tiffin, Ohio. He was admitted to practice in Ohio in 1850 and shortly thereafter, in 1852, moved his practice to Toledo. He was elected Lucas County Prosecutor in 1860, on the eve of the Civil War and served one term, from 1861 to 1863. In 1874, he was elected to the Lucas County Common Pleas Court where he served three terms.

A contemporary historian of said of Prosecutor Lemmon:

He inspired confidence and trust by his honorable methods and conscientious devotion to the interests of his clients. The best evidence of the popular feeling in his honesty and ability, is the successive years he has been elected to the judicial offices by the suffrages of the people, in which position he has discharged his duties to the gratification of the entire Bar. [Waggoner, Clark, Memoirs of the City of Toledo and Lucas County, Vol. 3, p. 532].