Nielsen Hayden genealogy
Ancestors of Eilika von Oldenburg
┌── Egilmar I (Abt 1040 - ??)
┌── Egilmar II (Abt 1090 - Between 1142 and 1153)
│ └── Richeza
│
│
│ ┌── Hermann II (Abt 980 - 1025) =>
│ ┌── Bernhard
│ ┌── Konrad von Arnsberg (Abt 1040 - 19 Jul 1092)
│ ┌── Heinrich I ( - Between 1115 and 1118)
│ │ │
│ │ │ ┌── Benno von Northeim ( - Between 1047 and 1049) =>
│ │ │ ┌── Otto I von Northeim (Abt 1025 -
│ │ │ │ 11 Jan 1083 bur.Nicolai Chapel, Northeim, Lower Saxony, Germany)
│ │ │ │ 11 Jan 1083 bur.Nicolai Chapel, Northeim, Lower Saxony, Germany)
│ │ └── Mathilde von Northeim
│ │ └── Richenza ( - Bef 11 Jan 1083)
│ │
└── Eilika
│
│ ┌── Heinrich
└── Beatrix von Hildrizhausen ( - Between 1115 and 1122)
│
│ ┌── Henry of Schweinfurt (Abt 971 - 18 Sep 1017) =>
│ ┌── Otto of Swabia and Schweinfurt (Abt 1002 - 28 Sep 1057)
│ │ └── Gerberge (Abt 970 - Aft 1036)
│ │
└── Beatrix von Schweinfurt ( - 1104)
│
│ ┌── Olderich II Manfredo (992 - 29 Oct 1034 Turin, Torino, Piedmont, Italy)
│ │ (m. Bef 1014) =>
└── Irmingard de Susa ( - 28 Jan 1078)
└── Berta of Este ( - 1029)(m. Bef 1014) =>