William died on the 30th of March, 1865, at the U.S. Army General Hospital in Fort Smith, AR, which was located in Sebastian County, AR. Directly across the river from Fort Smith is Van Buren, AR, located in Crawford County, which was where he and Timy Ann Boen Doke (his wife) lived at the time of his death. His pension file showed his P.O. Box as Van Buren, AR. It is known his father, Campbell Whitfield Doak, and his six brothers, Robert, David, Nathaniel, Samuel, John and James, all lived in the Van Buren area; this is supported by the U.S. Cenus taken at the time and his brothers pension files. Located in Fort Smith, AR, is a U.S. Army National Cemetery in which many Civil War soldiers are buried. William is not listed at the office in the directory and family members have walked out the cemetery and found no stone bears his name. Fairview Cemetery in Van Buren has to be given special consideration as a possible burial site. The cemetery is located in the old historial district and was the only cemetery in Van Buren at the time of William's death according to local historians, with the exception of individuals being buried on their own property. The cemetery is located north of the old historial train depot on what in known locally as Log Town Hill. William's wife, Timy Ann, is also known to have relatives buried at Fairview Cemetery. Her oldest brother, William Boen, buried his son there in 1870.