Gracious
Jionna is a modern American elaboration of Gianna, which is the Italian diminutive of Giovanna. It ultimately derives from the Hebrew name Yochanan, meaning 'God is gracious.' This specific spelling is rare and offers a unique phonetic twist on a classic continental choice.
Less common today
Jionna isn't in the latest US Top 1000. It last peaked at #10,854 in 2020.
US births per 5-year period, 1990βpresent (SSA data).