Old Irish brí

← Proto-Celtic *brixs (inherited)

← Proto-Indo-European *bʰerǵʰ- (root)

→ Old English beorg (cognate)

→ Irish brí (inherited)

→ Scottish Gaelic bre (inherited)

→ Scottish Gaelic brèagha (derived)

→ Old Irish bregda (mention)

→ Old Irish Brega (mention)