Mathilda f. Old High German, Old Saxon maht 'might' + Old High German hiltja 'battle'.
The name of a 9th C Frankish saint, an 11th C Holy Roman Empress, an 11th C queen consort of England, two 12th C queens of England, a 12th C queen of Portugal, a 12th C German saint, a 13th C queen of Castile, a 13th C queen consort of Denmark, and a 13th C German saint.
The English forms Mald and Mold are witnessed in 1379 in the relational bynames Maldsoñ (WRYPT1 p. 292) and Moldsoñ (WRYPT1 p. 22).