Ermengarde married Ludwig I der Karolinger in 798. Ludwig (son of Charlemagne and Hildegard von Vinzgau) was born on 16 Apr 778 in Casseneuil, Lot-et-Garonne, Aquitaine, France; was christened in Aug 778 in Casseneuil, Lot-et-Garonne, Aquitaine, France; died on 20 Jun 840 in Ingelheim, Ingelheim am Rhein, Mainz-Bingen, Rhineland-Palatinate, Germany; was buried on 1 Jul 840 in Metz, Moselle, Lorraine, France. [Group Sheet] [Family Chart]