This was with Elbert Epps Copeland's photos, but he looks like Daniel Webster Finney. In the old Copeland family photo album, the tintype for DW Finney was missing. So I'm guessing...
Samuel Gilbert (SG) Copeland and Dan (this must be Samantha's younger brother Daniel Webster Finney)
You can clearly see Dan marked in the fixed tintype scan.
Arch Copeland - baby - tintype
Arch Copeland - baby - fixed
Jabez Rayl - married Wesley Finey's sister Catherine Finney