BRISTOL QUARTER SESSIONS

The Bristol Mercury (Bristol, England), Saturday, April 17, 1847
Joseph Gainey 36, captain of the schooner Swift trading between Bristol and Newport, and Samuel Gainey 36, one of the crewmen on board were charged with felonoiusly stealing 5 cwt of coal from the vessel , the property of J D Pountney. Several witnesses were called to character and both were aquitted.
Could be, the age you gave is in the range and you did mention Mariners and Bristol.
