What does Ezra mean?
From Hebrew ezra, 'help, aid' (root '-z-r). Borne by the scribe of the biblical Book of Ezra. Likely a shortened theophoric name (compare Azariah, 'Yahweh has helped'), with the divine element dropped.
What does Levi mean?
From the Hebrew verb lawah, 'to join, attach, accompany.' Genesis 29:34 explains the name by Leah's hope that her husband will now be 'joined' to her — a biblical folk etymology, but one that rests on the genuine root l-w-h.