Reihe Queenship and PowerPenelope Nash ×Bücher × Empress Adelheid and Countess MatildaMedieval Female Rulership and the Foundations of European SocietyPenelope NashPalgrave Macmillan USSoftcover2018 Empress Adelheid and Countess MatildaMedieval Female Rulership and the Foundations of European SocietyPenelope NashPalgrave Macmillan USHardcover2017