What does Matilda mean?
From the Germanic elements 'maht' (might, strength) and 'hild' (battle), giving the sense 'mighty in battle'. Popularized by the 11th-century Queen Matilda, wife of William the Conqueror.
What does Hildegard mean?
From Germanic 'hild' (battle) and 'gard' (enclosure, protection), roughly 'protector in battle'. Borne by the 12th-century abbess and polymath Hildegard of Bingen.