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.
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.