I am looking for info on David D. Ditto of McLaughlin's Squadron Co. B Ohio Volunteer Infantry. He was captured along with his brother John on Jan. 1, 1862 near Paintsville, Ky and exchanged with John in May of 1862. He later died from complications of an infection he contracted while in prison. From a family letter of the time he was held at Libby Prison, But I can find no evidence of that. Can anyone help? Thank you