 In 1837, he was appointed Superintendent of Pembroke Dockyard; but he died in the same year in his office in Pembroke Dock, aged 66, and was buried in the Park Street graveyard at Pembroke Dock.The graveyard has now been turned into a recreational area, however Cumby's grave remains in place.A street near the royal dockyard was named Cumby Terrace in his honour.