Mary ___, first lady's maiden name (4)

I believe the answer is:

todd

(Other definitions for todd that I've seen before include "Irish-born British actor and soldier, Richard, d. 2009" , "19th-century demon barber of Fleet Street" , "Richard --, was Guy Gibson in The Dam Busters" , "Sweeney, Fleet Street barber" , "Demon 12 of Fleet Street" .)

I've seen this clue in The New York Times.

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