Hello Lisa, I see where you have located what appears to be his photograph on Find-A-Grave. Needless to say you know he was a Union soldier with Company D 15th Regiment, Kentucky Infantry.

According to his Union Compiled Military Service Records he was taken prisoner on September 20, 1863 during the battle of Chickamauga. He was taken to Libby Prison and arrived there on September 29, 1863. He then was forwarded to Danville, Virginia where he arrived on December 12, 1863 and was admitted to the hospital for small-pox. From Danville, Virginia he was transferred to Camp Sumter, aka Andersonville, Georgia however a date is not recorded. He was paroled to Savannah, Georgia and then transferred to Camp Parole, Maryland where he arrived on December 10, 1864 and was exchanged as a prisoner of war. He was furloughed on December 11, 1864 for 30 days with orders to report to Camp Chase after his leave.

For the rest of our readers I will post an article about him on Find-A-Grave:

Kentucky: A History of the State, Perrin, Battle, Kniffin, 8th ed., 1888,Bullitt Co.WILLIAM H. SHEPHERD was born in Bullitt County, Ky., January 5, 1841, andhis father, James Shepherd, also a native of Bullitt County, was bornJuly 16, 1817, and married Miss Malinda Welch, whose parents came fromVirginia. William H. Shepherd enlisted at Louisville, September 22, 1861,in the Fifteenth Kentucky Volunteers, Federal service, and served threeyears and six months. He was wounded at the battle of Chickamauga, wastaken prisoner and sent to Andersonville, later to Charleston, S.C., andstill later to Savannah, Ga., where he was paroled and sent to Annapolis,Md., then to Louisville, where he was discharged, having been held as aprisoner of war fourteen months. He was married to Melissa Croan, whobore him three children--Daily D., born January 24, 1867; William, August5, 1870; and Musette, June 15, 1873. Mrs. Shepherd departed this lifeDecember 18, 1873, and in 1875 Mr. Shepherd was untied in marriage withMiss Elizabeth V. Smith, who has borne him seven children--Nannie, Clara,Julia, Isaac, Charles, Owen and Lydia. Mr. Shepherd owns, cultivated andresides upon a fine farm near Shepherdsville P. O., Bullitt County.Shepherd Welch Croan Smith=VAhttp://www.rootsweb.com/~kygenweb/kybiog/bullitt/shepherd.wh.txt
- Bob Druin