Nielsen Hayden genealogy
Family: Peter II of Courtenay, Emperor of Constantinople / Agnes de Nevers (F14867)
m. 1184Pierre of France (1121-1180) 
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Elisabeth de Courtenay ( -1206)
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Alix de Courtenay (1160-1218)  |
| Robert I de Courtenay (1168-1239) |
| Constance de Courtenay (1174-1232) |
| Guy I (1149-1175)
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| Mahaud of Burgundy ( -1192)
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| Agnes de Nevers ( -1192)
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| Peter II of Courtenay, Emperor of Constantinople (1155-1217)
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| Mahaut de Courtenay (1188-1257) |