Glad to see that this soldier has a military marker at his grave in the New Fairview Baptist Baptist Church Cemetery, Kalida, Roane Co., TN
William was born 17 March 1834 Knox Co., TN to Matthew McCowan and Elizabeth Luttrell; d. 3 July 1876 Roane Co., Tn
married Francis Hurst and had at least 9 children
Find-a-grave has photo of his marker and stated that he was a POW at Rock Island, ILL