Nielsen Hayden genealogy
Berta de Clavesena
1. Berta de Clavesena Berta married Guillermo VIII-VI before 9 Aug 1202. Guillermo (son of Boniface I and Elena di Busca) died on 17 Sep 1225 in Halmyros, Greece. [Group Sheet] [Family Chart]
Children:
- 2. Boniface II was born about 1202; died between 12 Jun 1253 and 10 Dec 1256.
Generation: 2
2. Boniface II (1.Berta1) was born about 1202; died between 12 Jun 1253 and 10 Dec 1256. Boniface married Margereta of Savoy on 9 Dec 1235. Margereta (daughter of Amedee of Savoy and Marguerite of Burgundy) died in 1254. [Group Sheet] [Family Chart]
Children:
- 3. Alessina de Monferrato died on 5 Feb 1285.
Generation: 3
3. Alessina de Monferrato (2.Boniface2, 1.Berta1) died on 5 Feb 1285. Alessina married Albrecht I on 1 Nov 1266. Albrecht (son of Otto I of Brunswick-Lüneburg and Matilde von Brandenburg) was born in 1236; died on 15 Aug 1279. [Group Sheet] [Family Chart]
Children:
- 4. Heinrich I of Brunswick was born in Aug 1267; died on 7 Sep 1322.
- 5. Albrecht II of Brunswick was born about 1268; died on 22 Sep 1318; was buried in Brunswick Cathedral, Braunschweig, Lower Saxony, Germany.
- 6. Matilde was born in 1276; died before 31 Aug 1318.
Generation: 4
4. Heinrich I of Brunswick (3.Alessina3, 2.Boniface2, 1.Berta1) was born in Aug 1267; died on 7 Sep 1322. Heinrich married Agnes von Meissen in 1282. Agnes (daughter of Albrecht II of Meissen and Margarethe von Hohenstaufen) was born before 1264; died after 1 Feb 1332. [Group Sheet] [Family Chart]
Children:
- 7. Ernst of Brunswick was born about 1297; died on 11 Mar 1361.
5. Albrecht II of Brunswick (3.Alessina3, 2.Boniface2, 1.Berta1) was born about 1268; died on 22 Sep 1318; was buried in Brunswick Cathedral, Braunschweig, Lower Saxony, Germany. Albrecht married Richza of Werle on 10 Jan 1284. Richza (daughter of Heinrich I of Werle and Richeza Birgersdotter) died after 2 Oct 1312; was buried in Göttingen, Lower Saxony, Germany. [Group Sheet] [Family Chart]
Children:
- 8. Magnus I of Brunswick was born about 1304; died between 15 Jun 1369 and 15 Aug 1369; was buried in St. Michaelis, Lüneberg, Lower Saxony, Germany.
- 9. Ernst of Brunswick was born in 1305; died on 24 Apr 1367.
6. Matilde (3.Alessina3, 2.Boniface2, 1.Berta1) was born in 1276; died before 31 Aug 1318. Matilde married Henryk I-III von Schliesen before Apr 1290. Henryk (son of Konrad I and Salomea of Poland) was born between 1251 and 1260; died on 9 Dec 1309. [Group Sheet] [Family Chart]
Children:
- 10. Heinrich II of Silesia was born between 1289 and 1293; died on 22 Jan 1342; was buried in Zagan, Zagan, Silesia, Poland.