Nielsen Hayden genealogy
Descendants of Menendo Goncalves
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Father: Gonçalo Menéndez de Porto
(Abt 930 - 997)
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Mother: Ilduara Pelaez de Deza
( - Aft 964)
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Menendo Goncalves (Abt 960 - Aft 1008)
   
Alfonso V, King of Leon
(Abt 996 - 1027 bur.Monastery of San Isidoro, León, Spain)(m. 1013)
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Ferdinand I, King of Leon
(Abt 1016 - 27 Dec 1065 León, León, Spain)
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           └─ Alfonso VI, King of Leon, Castile, and Galicia
(Abt 1039 -
            1 Jul 1109 Toledo, Toledo, Castilla-La Mancha, Spain) =>
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            1 Jul 1109 Toledo, Toledo, Castilla-La Mancha, Spain) =>
            + Constance of Burgundy
(1046 - 1092 bur.Royal Monastery of San Benito, Sahagun, León, Spain)
            (m. 1079)
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            (m. 1079)