White, fair, or shining
Beonca is a modern phonetic variant of Bianca. It ultimately derives from the Germanic word for white or fair, popularized in Italy and later adopted into English-speaking cultures.
Less common today
Beonca isn't in the latest US Top 1000. It last peaked at #5,241 in 1992.
US births per 5-year period, 1990βpresent (SSA data).