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Burgess is a word in English that originally meant a freeman of a borough (England) or burgh (Scotland). It later came to mean an elected or unelected official of a municipality, or the representative of a borough in the English House of Commons.[1]
so they must have been well respected members of the community. quite what they had to do Im not sure .Documents refer to "..the mayor, aldermen and burgesses" so they were quite honoured.
hope that helps