Nielsen Hayden genealogy
Ancestors of Albrecht I of Brunswick
Abt 1339 - 1383 (~ 44 years) ┌── Albrecht I (1236 - 15 Aug 1279)(m. 1 Nov 1266) =>
┌── Heinrich I of Brunswick (Aug 1267 - 7 Sep 1322)(m. 1282)
│ └── Alessina de Monferrato ( - 5 Feb 1285)(m. 1 Nov 1266) =>
│
┌── Ernst of Brunswick (Abt 1297 - 11 Mar 1361)(m. Abt 1335)
│ │
│ │ ┌── Albrecht II of Meissen (1240 - 20 Nov 1315)(m. 1254) =>
│ └── Agnes von Meissen (Bef 1264 - Aft 1 Feb 1332)(m. 1282)
│ └── Margarethe von Hohenstaufen (Abt Feb 1237 - 8 Aug 1270 Frankfurt-am-Main, Germany)(m. 1254) =>
│
Albrecht I of Brunswick (Abt 1339 - Between 11 Aug 1383 and 22 Sep 1383 Salzderhelden, Lower Saxony, Germany)
│
│ ┌── Otto of Everstein =>
│ ┌── Hermann II of Everstein ( - Between 20 Jun 1350 and 12 Jun 1351)
│ │ └── Luitgard von Schladen =>
│ │
└── Adelheid of Everstein ( - Aft 1376)(m. Abt 1335)
│
└── Adelheid zur Lippe ( - Aft 1324)
└── Adelheid von Waldeck ( - Between 17 Aug 1338 and 5 Aug 1342)(m. Bef Aug 1282) =>