Gracious
Ceonna is a modern American invention, likely created as a phonetic variation of names like Sianna or Seanna. It combines the Irish 'SeΓ‘n' (John) roots with a contemporary feminine suffix, ultimately tracing back to the Hebrew name Yochanan.
Less common today
Ceonna isn't in the latest US Top 1000. It last peaked at #10,583 in 2008.
US births per 5-year period, 1990βpresent (SSA data).