Augustus G. Sinks was born in Montgomery County, Ohio on February 12, 1841. He married Mary Alspach and they had two children. In 1877, two year's after Mary's death, he married Roanna I. Babcock and they had two children. In 1861, he enlisted in the 46th Indiana Regiment, Company K where he remained until 1865 and was honorably discharged with the rank of Sergeant. Augustus G. Sinks died in June 1915.
From the description of Augustus G. Sinks papers, 1861-1865. (Lincoln Library). WorldCat record id: 247223985