Nielsen Hayden genealogy
Family: William V "il Vecchio" of Montferrat / Judith of Babenberg (F5428)
m. Bef 28 Mar 1133Rainier of Montferrat (1084-1136) 
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Gisela of Burgundy (1070-1134)
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| St. Leopold von Babenberg (1073-1136)
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| Agnes of Germany (1073-1143)
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Heinrich II of Austria (1107-1177)  |
| Agnes of Babenberg (1110-1157) |
| Gertrud von Österreich (1120-1151) |
| William V "il Vecchio" of Montferrat (1115-1191)
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| Judith of Babenberg (1115-1168)
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| Azalaïs of Montferrat (1150-1232) |
| Boniface I (1150-1207) |