aristocrat
noblewoman; (1787-1834); wife of John Ponsonby (later 4th Earl of Bessborough)
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Join the roomMaria Ponsonby, Viscountess Duncannon was an English aristocrat and the wife of John Ponsonby, Viscount Duncannon. She died before he inherited the earldom and thus was never Countess of Bessborough, but three of her sons were successively earls of Bessborough.
