Nielsen Hayden genealogy
Family: Albrecht I / Alessina de Monferrato (F15023)
m. 1 Nov 1266Otto I (1204-1252) 
|
Matilde von Brandenburg (1210-1261)
|
Adelheid of Brunswick-Lüneburg ( -1274)  |
| Helene von Braunschweig-Lüneburg (1223-1273) |
| Boniface II (1202-1253)
|
| Margereta of Savoy ( -1254)
|
| Albrecht I (1236-1279)
|
| Alessina de Monferrato ( -1285)
|
| Albrecht II of Brunswick (1268-1318) |
| Matilde (1276-1318) |