Bertha of Rheinfelden


Bertha of Rheinfelden , countess of Kellmünz, was the daughter of Rudolf of Rheinfelden and wife of Ulrich X of Bregenz.

Life

Bertha was the daughter of Rudolf of Rheinfelden and Adelaide of Savoy. Her sister, Adelaide of Rheinfelden, was married to Ladislaus I of Hungary. Bertha’s husband was Ulrich X, count of Bregenz. According to the Chronicle of Petershausen, Ulrich was betrothed to a daughter of Count Werner of Habsburg, but secretly arranged to marry Bertha instead.
Bertha inherited property in the Schluchsee region. She possessed three secular benefices of the monastery of Marchtal. 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. In addition to Mehrerau, Bertha was also a patron of the monastery of Isny. Through her husband, Ulrich, Bertha was also associated with the monastery of Petershausen. After her Ulrich’s death in a hunting accident in 1097, Bertha and her sons restored property in Bigenhausen to Petershausen for the sake of her husband's soul.
And around 1122 Bertha interceded on behalf of lay brothers from Petershausen who had violently attacked the monastery’s cellarer. Bertha’s intervention ensured that they were received back into the monastery.
After Ulrich X’s death, his dynasty came into conflict with the Welf and Kirchberg dynasties over property in Linzgau, Alpgau and Upper Raetia. According to one account, Bertha ‘fought manfully’ at the Battle of Jedesheim, at which the forces of Rudolf of Bregenz were defeated by Count Hartmann of Kirchberg.
Bertha died sometime after 1128 and was buried at the abbey of Mehrerau.

Children

With Ulrich, Bertha had the following children: