More on Macheath from Infoplease:

• Macheath - Macheath (Captain). A highwayman, hero of The Beggar's Opera, by Gay. A fine, gay, bold-faced ...
• Alias - Alias “You have as many aliases as Robin of Bagshot,” one of Macheath's gang: he ...
• Dictionary of Phrase and Fable: M - Definitions, origins, and illustrative excerpts for words, phases, and literary allusions starting with "M"