More on Monmouth Street from Infoplease:

• Monmouth Street - Monmouth Street (London) takes its name from the unfortunate son of Charles II., executed for ...
• Horse-shoes - Horse-shoes were at one time nailed up over doors as a protection against witches. Aubrey says, ...
• Dictionary of Phrase and Fable: M - Definitions, origins, and illustrative excerpts for words, phases, and literary allusions starting with "M"