Gracious
Shavonna is a modern American elaboration of Siobhan, the Irish Gaelic form of Joan. It combines the traditional phonetic elements of the Irish name with a stylized suffix common in late 20th-century African American naming traditions.
Less common today
Shavonna isn't in the latest US Top 1000. It last peaked at #2,636 in 1992.
US births per 5-year period, 1990βpresent (SSA data).