Hello again Annie,
I'm still on the trail of Seargent John Reilly/O' Reilly.
According to Neil1821, John may have left the 8th hussars around the time around the time the Indian Mutiny rolls were taken and joined the Cape mounted rifles. He may well have been a private at the time earning his Seargent's stripes in the 'Rifles'.
So around 1859 then.