I searched YouTube, and got tangented towards Romania, because someone suggested Morris derived from Dacian soldiers in Britain under the Romans. Their dancers were wearing baldrics and bells, and carrying sticks but were otherwise unlike Morris - apart from being only males (who had to keep away from their wives and other women befoe performances). I wasn't convinced.
Did anyone see, on Alistair Cook's America, a side of native American dancers in one of the southern states influenced by Spain doing something very morrisy (with bells)- explained as deriving from whatever Moorish influence there had been on Morris?
Our local Punjabis had a similar dance, with sticks and bells, two rows, heys and so on. Not sure if that came from any ancient common ancestor, or simply that there's a limited number of things people can do with dance.