William C. Hubbard was born in December 1828 in Washington County, Indiana, to George Hubbard and Charlotte Stewart. His father was a blacksmith who owned $400 of real estate by 1850. He enlisted in the Union army on September 22, 1864, and mustered in as a private in Company G of the 58th Indiana Infantry. He mustered out in Washington, D.C., on June 4, 1865.
He returned to Indiana after the war and married Elizabeth H. Clark on September 20, 1866. They had at least five children: Martha, born around 1868; Adaline, born around 1869; Minnie, born around 1871; James, born around 1872; and Floyd, born around 1879.
They lived in Wayne, Indiana, and Hubbard worked as a blacksmith. By 1870, they owned $500 of real estate and $200 of personal property. They moved to Scott, Indiana, in the 1870s, and by 1900, they were living in Franklin, Indiana. He applied for a federal pension in July 1882 and eventually secured one.
In November 1904, he was admitted to the National Home for Disabled Volunteer Soldiers in Marion, Indiana. He was suffering from “articular rheumatism,” arteriosclerosis, deafness, an “old fracture [of the] left hip” and an “old injury [to the] left shoulder.” According to his admission records, he was 5 feet, 8 inches tall, with gray hair and gray eyes. Officials transferred him to the National Home in Danville, Illinois, on July 21, 1917, and he died there on June 8, 1918.