Eadburh is mentioned by Asser, a 9th-century monk who wrote a biography of Alfred the Great: Asser says that Eadburh had "power throughout almost the entire kingdom", and that she "began to behave like a tyrant after the manner of her father".
Eadburh disinggung oleh Asser, seorang rahib dari abad ke-9 yang menulis sebuah biografi Alfred yang Agung: Asser mengatakan bahwa Eadburh "berkuasa hampir di seluruh kerajaan", dan bahwa ia "mulai berperilaku seperti seorang tiran seperti ayahandanya".