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Teresa Díaz de Haro
Spanish noblewoman · Born 1254
Teresa Díaz II de Haro was a Spanish noblewoman and a lady of Biscay, and one of five children of Diego López III de Haro, the Lord of Biscay, and Constanza de Bearne. Her maternal grandparents were the viscount Guillermo II de Bearne and his wife, Garsenda of Provence.
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Her paternal grandparents were Lope Díaz II de Haro, also Lord of Biscay, and of Urraca Alfonso de León, the illegitimate daughter of King Alfonso IX of León. Amongst her siblings was Diego Lopez V de Haro.