God has answered; or a combination of Ali and Anna
Aliannah is a modern American elaboration of Eliana or Aliana. It likely stems from the Hebrew name Eliyanah, meaning 'my God has answered,' though it is often perceived as a blend of the names Ali and Anna.
Less common today
Aliannah isn't in the latest US Top 1000. It last peaked at #2,441 in 2014.
US births per 5-year period, 1990βpresent (SSA data).
Daughter of reality television personality Leah Messer