 Anna Maria Plunkett, wife of Admiral James Ryder Burton, was a sister of her husband's paternal grandfather, Edward Wadding Plunkett, 13th Baron of Dunsany.In addition, Ernle, Lady Dunsany, was descended via her maternal line from James Drax, a young Englishman who, with a few hundred pounds, had sailed from the Port of London for Barbados in the late 1620s.There he had made a fortune developing sugar and slave-trading into a hugely profitable business.