Welsh bore

← Breton beure (cognate)

← Proto-Celtic *bāregos (inherited)

← Irish amáireach (mention)

← Irish amárach (mention)

← Old Irish bárach (cognate)

← Old Irish i mbárach (mention)

→ English morn (cognate)

→ Breton beure (cognate)

→ Welsh boreau (affix)

→ Welsh yfory (cognate)

→ Irish amárach (cognate)

→ Scottish Gaelic a-màireach (cognate)

→ Manx mairagh (cognate)

→ Old Irish bárach (cognate)

→ Old Irish i mbárach (cognate)