 Her biography was written, and subsequently her cult popularized, by Hildegard of Bingen, who lived in the same region, about four hundred years later.Bertha and Rupert share a feast day on 15 May.In 1150, Hildegard moved, with her nuns, from Disibodenberg to the Rupertsberg, a crag at the confluence of the Nahe and the Rhine, and established a monastery on the site of the ruined castle, where Bertha and Rupert were buried.