Walter Pyne was born on July 29, 1867, in Southwick, Massachusetts to Edward and Kate Pyne. Mr. Pyne had blue eyes and auburn hair, and worked as a day laborer and a farmer.
Officials registered Mr. Pyne into the 3rd Massachusetts Cavalry in 1888 but dishonorably discharged him on February 26, 1892 in Houston, Texas. He married Jennie Wilbur and had two daughters with her, Jennie and Nellie. Of his two children, only Jennie survived.
Mr. Pyne died on November 13, 1909, at the Rutland Prison Camp and Hospital of Pulmonary Tuberculosis and Gastritis, at 42.