Nielsen Hayden genealogy
Family: Friedrich II, Holy Roman Emperor / (Unknown mistress of Friedrich II) (F15314)
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Father | Male
Friedrich II, Holy Roman Emperor
Born 26 Dec 1194 Died 13 Dec 1250 Buried Married Other Spouse Bianca Lancia | F15140 Married Other Spouse Isabella of England | F15145 Married 20 Jul 1235 Worms, Germany 
Father Heinrich VI, Holy Roman Emperor | F15139 Group Sheet Mother Constance of Sicily | F15139 Group Sheet
Child 1 | Female
+ Margherita de Svevia
Born Died Between 1297 and 1298 Buried Spouse Tommaso d'Aquino | F15315 Married 1247