FindMyPast has a short service record for an Andrew Drynan , born 1841 Penningham , Newton Stewart, who served in Canada 20 Dec 1861 to 10 Oct 1864 with the Scots Guards. He is on the 1861 Army Index as Andrew Drynan private 388 3rd Foot Guards , Scots Fusiliers.
Added - enlisted 20 Oct 1858 ( noted as under age ) and discharged 7 Jul 1865.