Nielsen Hayden genealogy
Ancestors of Helene of Saxony
- 1309 ┌── Albrecht of Saxony (1100 - 18 Nov 1170)(m. Abt 1125) =>
┌── Bernhard III of Saxony (1140 - 9 Feb 1212)
│ └── Sophia von Winzenburg ( - 8 Jun 1160)(m. Abt 1125) =>
│
┌── Albrecht I of Saxony (Abt 1180 - 8 Nov 1261)(m. Between 1247 and 1248)
│ │
│ │ ┌── Mieszko III, High Duke of Poland (Abt 1126 - 13 Mar 1202) =>
│ └── Judith of Poland (Abt 1152 - Aft 1201)
│ └── Elisabeth of Hungary (Abt 1128 - Bef 1155) =>
│
Helene of Saxony ( - 12 Jun 1309 bur.Nuremberg, Bavaria)
│
│ ┌── Wilhelm of Brunswick-Lüneburg (11 Apr 1184 Winchester, Hampshire, England -
│ │ 13 Dec 1213 Lüneburg, Lower Saxony, Germany)(m. Jul 1202 Hamburg, Germany) =>
│ │ 13 Dec 1213 Lüneburg, Lower Saxony, Germany)(m. Jul 1202 Hamburg, Germany) =>
│ ┌── Otto I of Brunswick-Lüneburg (1204 - 19 Jun 1252)
│ │ └── Helene of Denmark (Abt 1180 - 22 Nov 1233)(m. Jul 1202 Hamburg, Germany) =>
│ │
└── Helene of Brunswick-Lüneburg (18 Mar 1223 - 6 Sep 1273)(m. Between 1247 and 1248)
│
│ ┌── Albrecht II of Brandenburg (Abt 1177 - 25 Feb 1220)(m. Aug 1205) =>
└── Matilde von Brandenburg (Abt 1210 - 10 Jun 1261)
└── Mathilde von Nieder-Lausitz ( - 1255)(m. Aug 1205) =>