Nielsen Hayden genealogy
Ancestors of Frederick II von Hohenstaufen
1090 - 1147 (57 years)
┌── Frederick 
┌── Frederick of Büren (Abt 1020 - 1053)(m. Abt 1042)
(Abt 1020 - 1053)(m. Abt 1042) │ └── Adelheid of Filsgau
│
┌── Frederick I of Swabia (Abt 1050 - Bef 21 Jul 1105 bur.Lorch Abbey, Baden-Württemberg, Germany)
(Abt 1050 - Bef 21 Jul 1105 bur.Lorch Abbey, Baden-Württemberg, Germany) │ (m. Abt 1086)
│ │
│ │ ┌── Hugo VI of Egisheim (Abt 970 - ??)
(Abt 970 - ??) │ │ │ └── Luitgard von Metz
│ │ │
│ │ ┌── Gerhard I ( - 1038)
( - 1038) │ │ │ └── Heilwig von Dagsburg ( - 1046)
( - 1046) │ │ │
│ └── Hildegard of Egisheim-Dagsburg (Abt 1028 - Abt 1095)(m. Abt 1042)
(Abt 1028 - Abt 1095)(m. Abt 1042) │
Frederick II von Hohenstaufen (1090 - 4 Apr 1147)
│
│ ┌── Henry of Speyer (Abt 968 - 989 bur.Worms Cathedral, Worms, Germany) =>
(Abt 968 - 989 bur.Worms Cathedral, Worms, Germany) => │ ┌── Conrad II "The Salic", Holy Roman Emperor ( - 4 Jun 1039 Utrecht, Netherlands)
( - 4 Jun 1039 Utrecht, Netherlands) │ │ (m. Bef Feb 1016)
│ │ └── Adelaide of Alsace =>
=> │ │
│ ┌── Heinrich III, Holy Roman Emperor (28 Oct 1016 - 5 Oct 1056 Bodfeld, Harz, Germany)
(28 Oct 1016 - 5 Oct 1056 Bodfeld, Harz, Germany) │ │ (m. 21 Nov 1043)
│ │ │
│ │ │ ┌── Hermann II of Swabia ( - 4 May 1003)(m. Abt 988) =>
( - 4 May 1003)(m. Abt 988) => │ │ └── Gisele of Swabia (11 Nov 995 - 14 Feb 1043 Goslar, Lower Saxony, Germany)
(11 Nov 995 - 14 Feb 1043 Goslar, Lower Saxony, Germany) │ │ (m. Bef Feb 1016)
│ │ └── Gerberga of Burgundy ( - Aft 1016)(m. Abt 988) =>
( - Aft 1016)(m. Abt 988) => │ │
│ ┌── Heinrich IV, Holy Roman Emperor (11 Nov 1050 Goslar, Lower Saxony, Germany -
│ │ 7 Aug 1106 Liège, Belgium)(m. 13 Jul 1066)
(11 Nov 1050 Goslar, Lower Saxony, Germany -│ │ 7 Aug 1106 Liège, Belgium)(m. 13 Jul 1066)
│ │ │
│ │ │ ┌── William II of Poitou (935 - 3 Feb 993)(m. 968) =>
(935 - 3 Feb 993)(m. 968) => │ │ │ ┌── William III of Poitou (969 - 31 Jan 1030)
(969 - 31 Jan 1030) │ │ │ │ └── Emma of Blois (950 - Abt 1003)(m. 968) =>
(950 - Abt 1003)(m. 968) => │ │ │ │
│ │ └── Agnes of Poitou (Abt 1025 - 14 Dec 1077 Rome)(m. 21 Nov 1043)
(Abt 1025 - 14 Dec 1077 Rome)(m. 21 Nov 1043) │ │ │
│ │ │ ┌── Otto-William of Burgundy (Bef 962 - Bef 21 Sep 1026 bur.Dijon Cathedral, Dijon,
│ │ │ │ Côte-d'Or, Burgundy, France) =>
(Bef 962 - Bef 21 Sep 1026 bur.Dijon Cathedral, Dijon, │ │ │ │ Côte-d'Or, Burgundy, France) =>
│ │ └── Agnes of Burgundy (Abt 995 - 10 Nov 1068 bur.Abbey of St. Nicolas de Poitiers, Vienne,
│ │ Poitou-Charentes, France)
(Abt 995 - 10 Nov 1068 bur.Abbey of St. Nicolas de Poitiers, Vienne, │ │ Poitou-Charentes, France)
│ │ └── Ermentrude de Roucy (Abt 950 - 5 Mar 1002) =>
(Abt 950 - 5 Mar 1002) => │ │
└── Agnes of Germany (1073 - 24 Sep 1143 bur.Klosterneuberg, Austria)(m. Abt 1086)
(1073 - 24 Sep 1143 bur.Klosterneuberg, Austria)(m. Abt 1086) │
│ ┌── Humbert I of Savoy ( - 1 Jul 1047 bur.Cathedral of Saint-Jean-de-Maurienne, Savoie,
│ │ Rhône-Alps, France)(m. Bef 1020)
( - 1 Jul 1047 bur.Cathedral of Saint-Jean-de-Maurienne, Savoie, │ │ Rhône-Alps, France)(m. Bef 1020)
│ ┌── Otto I of Savoy ( - Between 19 Jan 1057 and 1060)(m. Abt 1046)
( - Between 19 Jan 1057 and 1060)(m. Abt 1046) │ │ └── Ancilla (m. Bef 1020)
(m. Bef 1020) │ │
└── Bertha of Turin (1051 - 27 Dec 1087 Mainz, Hessen, Germany)(m. 13 Jul 1066)
(1051 - 27 Dec 1087 Mainz, Hessen, Germany)(m. 13 Jul 1066) │
│ ┌── Manfred I of Turin ( - Abt 1000)(m. Aft 962) =>
( - Abt 1000)(m. Aft 962) => │ ┌── Olderich II Manfredo (992 - 29 Oct 1034 Turin, Torino, Piedmont, Italy)(m. Bef 1014)
(992 - 29 Oct 1034 Turin, Torino, Piedmont, Italy)(m. Bef 1014) │ │ └── Prangardia di Canossa (of Canossa, Italy - ??)(m. Aft 962) =>
(of Canossa, Italy - ??)(m. Aft 962) => │ │
└── Adelaide of Susa (Abt 1015 - 27 Dec 1091 Canischio, Turino, Piedmont, Italy)(m. Abt 1046)
(Abt 1015 - 27 Dec 1091 Canischio, Turino, Piedmont, Italy)(m. Abt 1046) │
│ ┌── Oberto Obizzo II of Este (Abt 950 - 1014) =>
(Abt 950 - 1014) => └── Berta of Este ( - 1029)(m. Bef 1014)
( - 1029)(m. Bef 1014) └── Railende du Como