Gracious
Yianna is a diminutive form of Ioanna, the Greek feminine version of John. It shares the same etymological roots as Joanna and Jane, ultimately deriving from the Hebrew name Yochanan.
Less common today
Yianna isn't in the latest US Top 1000. It last peaked at #9,744 in 2009.
Greek singer and songwriter
US births per 5-year period, 1990βpresent (SSA data).