The first highlighted name may be Pvte. M. S. Britton who was held at, and survived, Andersonville. It appears he gave his attached unit as Carlisle Barracks, PA, suggesting he was a member of a small local garrison guard unit posted there. He was moved from Andersonville to Millen, GA, on Oct. 31, '64.
The second highlighted name might be Pvte. (although he's recorded as corporal) John Boorman, Co. D, 1st. NY Veteran Cavalry. He was captured on July 3, '64, at Leetown, VA. Boorman died on Jan. 25 or 28, '65, and is buried in Andersonville National Cemetery, at Andersonville, GA.
See
https://www.findagrave.com/memorial/51151644/john-h-boorman