Eighth; follower of Christ
Tavianna is a modern American elaboration, likely created by blending the Latin name Octavia with the popular suffix -anna. It carries the numerical meaning of 'eighth' from its Octavia roots and the 'grace' or 'favor' associated with Anna.
Less common today
Tavianna isn't in the latest US Top 1000. It last peaked at #10,829 in 1997.
US births per 5-year period, 1990βpresent (SSA data).