The parents of Agnes were Duke
Henry III, Duke of Głogów and
Żagań; and
Matilda, daughter of Duke
Albert of Brunswick-Lüneburg. On 18 May 1309, Agnes married Duke
Otto III of Lower Bavaria, who was about thirty years her senior and had been the King of Hungary under the title of Béla V from 1305 to 1307/08. His previous wife was Catherine of Habsburg, who died in 1282. The marriage of Agnes with Otto III resulted in two children: • Agnes (1310–1360), married to Henry IV, Count of
Ortenburg •
Henry XV Following the death of Otto III, the then
Duke of Bavaria Louis sought guardianship over Otto's children, while Agnes and the nobles of Lower Bavaria preferred
Frederick the Fair. The dispute culminated in the
Battle of Gammelsdorf in 1313, in which Louis was victorious. Agnes then resided in Natternberg and
Deggendorf, with income from estates in Deggendorf and
Landau. In 1319, Agnes married Alram, Count of Hals, with whom she had a daughter. After his death in 1331, she lived as a widow in the Seligenthal Monastery near
Landshut until her own death in 1361. Her body was buried with her first husband Duke Otto III in the Seligenthal Monastery. == References ==