Divine or valley
A variant of Deanna, which likely has two distinct roots. It is often considered a feminine form of Dean, derived from the Old English word for 'valley', or a variation of Diana, the Latin name meaning 'divine' or 'heavenly'.
Less common today
Deannah isn't in the latest US Top 1000. It last peaked at #9,470 in 1998.
US births per 5-year period, 1990βpresent (SSA data).