Isabel Marshal, Countess of CornwallGender: FemaleBirth: Oct 9 1200 - Pembroke Castle, Pembrokeshire, EnglandBaptism: Apr 1206 - Saint David's, Pembrokeshire, WalesOccupation: Countess of HertfordMarriage: Spouse: Gilbert de Clare, Earl of Hertford and Gloucester, Surety of the Magna Carta - Oct 9 1217 - EnglandDeath: Jan 15 1240 - Berkhampstead, Hertfordshire, EnglandBurial: Beaulieu, Southampton, EnglandFather: William Marshall, 3rd (or 1st) Earl of PembrokeMother: Isabel Marshall (born de Clare), heiress of Pembroke / StrigoilHusbands: Richard Plantagenet, 1st Earl of Cornwall, Gilbert de Clare, Earl of Hertford and Gloucester, Surety of the Magna CartaChildren: Agnes de Clare, John (Plantagenet) of Cornwall, Henry Plantagenet, Nicholas of Cornwall, Isabella (Plantagenet) of Cornwall, Amice / Avicia de Clare, of Gloucester, Richard de Clare, 5th Earl of Hertford, 6th Earl of Gloucester, William de Clare, Isabella de Clare, Lady of Hertford and Gloucester, Gilbert de ClareSiblings: William Marshal, 2nd Earl Pembroke (2nd creation), Surety of the Magna Carta, Richard Marshal, 3rd Earl of Pembroke, Maud Marshal, Countess of Norfolk & Surrey, Gilbert le Marshall, 4th Earl of Pembroke (Knight Templar), Anselm Marshal, 6th Earl of Pembroke, Eva Marshal, Baroness Abergavenny, Walter Marshall, 5th Earl of Pembroke, Sibyl Marshal, Countess of Derby, Joan Munchensi (born Marshall)
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