If this is Joseph Kempster b 13/5/1814 Chesham, Bucks then he + his family are on my tree. In 1861 he was master of barge Confidence with his wife Jane nee Leaver + children moored at/near Uxbridge, Middx on the Grand Union Canal or a branch canal. They had 6 children and later ran a shop in Ladbroke Grove, W London. He died there 1902. If so, then I have more details