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In page Ida de Grey:

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Her paternal grandparents were Sir Roger Grey, 1st Baron Grey de Ruthyn and Elizabeth de Hastings, and her maternal grandparents were John Le Strange, 2nd Baron Strange of Blackmere, and Ankaret Le Botiller, daughter of Sir William Le Botiller and Ela de Herdeburgh. Ankaret was a direct descendant of Welsh Prince Gruffydd II ap Madog, Lord of Dinas Bran and his wife, Emma de Audley.[citation needed]