In what year was the abbess who wrote the biography of Bertha of Bingen born?
Hildegard of Bingen Hildegard of Bingen, O.S.B. (German: "Hildegard von Bingen" ; ; 1098 – 17 September 1179), also known as Saint Hildegard and Sibyl of the Rhine, was a German Benedictine abbess, writer, composer, philosopher, Christian mystic, visionary, and polymath. She is considered to be the founder of scientific natural history in Germany.
Bertulf of Renty Saint Bertulf, O.S.B. (alternate Bertulph, also known as Bertoul) was born in either Pannonia (Hungary) or Germany; he died in Artois in 705. He became a monk later in his life and founded a Benedictine abbey at Renty.