Nielsen Hayden genealogy
Family: Ruggiero Sanseverino / Teodora d'Aquino (F15331)
m. Abt 1250Tommaso Sanseverino (1187- ) 
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| St. Thomas Aquinas (1226-1274) |
| Ruggiero Sanseverino (1232-1285)
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Teodora d'Aquino ( -1295)
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Tommaso Sanseverino (1252-1324)  |