The fowler, or smooth bore, might have been used as a market or punt gun, but I suspect it really came from Morocco or Algeria. Been a long, long time, but I once spent a week with some Tuaregs in Morocco, and they had some similar firearms. A LOT more ornate, with silver and gold trim all over them. Never saw them fired but once, and that was an older fellow shooting from the top of a camel. Lots of smoke, for sure!
I think that was 1953 - dang! I am getting OLD!