The person who wrote the biography of Bertha of Bingen was born in what year?
Bertha 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. 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.
1098