Family: Marquess of Montferrat William, VII / Marchioness of Montferrat Isabel de Clare (F195)
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Eighth Earl of Clare, Sixth Earl of Hertford, 6th Earl of Gloucester Richard de Clare, IV (1222-1262) |
Maud de Lacy (1223-1289) |
7th Earl of Gloucester Lord Gilbert de Clare, IV (1243-1298) |
Marchioness of Montferrat Isabel de Clare (1240-1271) |