Green’s Dictionary of Slang

marmulet madam n.

also marmalet madam
[SE marmalade; ? her gaudy clothes or ironic ref. to the ‘sweetness’ of the preserve or SE marmalade-eater, one who has been well brought up + madam n.]

a promiscuous woman; a whore.

[US]J. Josselyn New-England 162: The Gallants a little before Sun-set walk with their Marmalet-Madams, as we do in Morefields, &c. till the nine a clock Bell rings them home.
[UK]N. Ward ‘The Infallible Predictor’ in Writings (1704) 351: More Marmulet Madams will be met strolling in the Fields, than Honest Women in the Streets.