In 1936, Frederick Henry Robertson ("Dada") of Constant Spring Road, Halfway Tree, Jamaica, then still a British colony, invented a mancala game, that was patented two years later (Patent Number: GB 476,480). It is an Oware variant, which he generalized to larger boards to make the game more interesting. Perhaps it is based on Woll, a mancala game mentioned by Robertson. He filed a second patent that described further improvements in 1938 (GB 493,112).