Where does “Sibán” come from?

Sibán (Irish) comes from Anglo-Norman Jehane, from Old French Jehanne, from Medieval Latin Johanna, from Latin Joanna, from Ancient Greek Ἰωάννα, from Hebrew יוֹחָנָה, from Hebrew יוֹחָנָן, from Hebrew יְהוֹחָנָן — God is gracious.