[2] According to the Chronicle of Petershausen, Ulrich was betrothed to a daughter of Count Werner of Habsburg, but secretly arranged to marry Bertha instead.
[4] (This property, which originally belonged to Herman II of Swabia, probably came into the possession of Bertha’s father, Rudolf, through his first marriage to Matilda of Germany, daughter of Emperor Henry III and Empress Agnes.
[5]) Bertha also inherited the church of Sargans, which she donated to the monastery of Mehrerau, which she and her husband, Ulrich, re-founded, c.1097.
[8] And around 1122 Bertha interceded on behalf of lay brothers from Petershausen who had violently attacked the monastery’s cellarer.
According to one account, Bertha ‘fought manfully’ (virilter pugnavit) at the Battle of Jedesheim (January 1108 or 1109), at which the forces of Rudolf of Bregenz were defeated by Count Hartmann of Kirchberg.