In what year was the abbess who wrote the biography of Bertha of Bingen born?
Bertha of Bingen Saint Bertha of Bingen (German: "Heilige Berta", died ca. 757) was the mother of Rupert of Bingen. Her biography was written, and subsequently her cult popularized, by Hildegard of Bingen, who lived in the same region, about three hundred years later. Bertha and Rupert share a feast day on May 15.
Frauenzell Abbey Frauenzell Abbey or Priory (Kloster Frauenzell) was a house of the Benedictine Order located at Brennberg in Bavaria in Germany.