Where does “Hannah” come from?

Hannah derives from English adoption of the Hebrew name יְהוֹחָנָן, meaning "God is gracious," which passed through Hebrew יוֹחָנָן and יוֹחָנָה, Ancient Greek Ἰωάννᾱ, Latin Johanna, and Swedish Johanna.

Hannah (English): Mother of the prophet Samuel in the Old Testament