Osborn Barnard was born on November 12, 1822, in Dayton, Ohio. His family moved to McLean County, Illinois, in February 1840. He worked as a farmer near Bloomington, Illinois, and by 1850, he owned $3,000 of real estate. He may have moved to Texas in the 1850s, and he married Sarah M. Clemons there on December 29, 1855. Their daughter Cora was born around 1872. They also adopted a son named William, who was born around 1864. They lived in Dale, Illinois, and by 1860, he owned $7,000 of real estate and $20,000 of personal property. He supported the Republican Party, and local Republicans nominated him for a position as Commissioner of Highways in the spring of 1860.
In August 1862, he received a commission as a 1st lieutenant in Company I of the 94th Illinois Infantry. In February 1863, he lamented the consequences of war. On a quiet Sunday morning, he heard “no sound of church bell or merry laugh of school children.” Instead, he wrote, “you see them at home or at their deserted abodes in their scanty dress & shoeless feet…it makes my heart bleed for my country & an early restoration of peace.”
He remained committed to the Union cause, writing that the only way to end the war was “by a conquering of those that have brought it on & forsaken their families & homes & cast their fortunes with the wicked ones of the Rebellion.” His health deteriorated in the spring of 1863, and he resigned on June 29, 1863.
He settled in Bloomington after the war and resumed his work as a farmer. By 1870, he owned $25,000 of real estate and $18,000 of personal property. He applied for a federal pension in July 1890 and eventually secured one. By 1901, he owned $32,000 of real estate and $20,000 of personal property. A local writer described him as an “intelligent and successful farmer” who “enjoyed the confidence and esteem of all who knew him.” He was “a man of noble character and his sterling integrity and courteous treatment endeared him to all who enjoyed close relations with him.” He died of “urenic poisoning” in Bloomington on June 23, 1901.