Career
Agnes was married with Henry I "the Marvelous" of Brunswick-Grubenhagen, in 1282. They had 16 children:
Elizabeth (born c 1282), married Frederick, Count of Beichlingen
Otto (born c 1283, died in or before 1309)
Albert (born c 1284, died after 1341), joined the Teutonic Order
Adelaide (1285–1320), married King Henry I of Bohemia
Facie (daughter. Born c 1286, died before or in 1312)
Agnes, Abbess of Osterode
Henry II, Duke of Brunswick-Lüneburg
Frederick
Adelheid of Brunswick
Conrad (c 1294 – c 1320)
Mechtild (c 1295 – 14 March 1344), married John II of Werle
Ernest I, Duke of Brunswick-Grubenhagen
William, Duke of Brunswick-Grubenhagen
Richardis, Abbess of Osterode
Margaret (born c 1300, died in or after 1312)
John I, Duke of Brunswick-Grubenhagen.
