High, noble, or strong
Brieonna is a modern American elaboration of the Irish name Brianna, which is the feminine form of Brian. It likely derives from the Old Celtic element 'bre' meaning hill or high, signifying nobility and strength. The 'eonna' suffix is a creative contemporary spelling variation common in the late 20th century.
Less common today
Brieonna isn't in the latest US Top 1000. It last peaked at #8,679 in 1994.
US births per 5-year period, 1990βpresent (SSA data).