Nielsen Hayden genealogy
Ancestors of Sibylle de Hauteville
┌── Tancred of Hauteville (Abt 970 - Abt 1041)
┌── Robert Guiscard (Abt 1015 near Coutances, Normandy, France -
│ 17 Jul 1085 Lixorion, Kefallinia, Ionian Islands, Greece)(m. 1058)
│ 17 Jul 1085 Lixorion, Kefallinia, Ionian Islands, Greece)(m. 1058)
│ └── Fressenda ( - 1057)
│
│
│ ┌── Gaimar III of Salerno (Abt 983 - 1027) =>
│ ┌── Gaimar IV of Salerno (Abt 1013 - 3 Jun 1052)
│ │ └── Gaitelgrima of Capua ( - Aft 1027) =>
│ │
└── Sigelgaita di Salerno (Abt 1040 - 1090)(m. 1058)
└── Gemma