French roi

← Middle French roy (inherited)

← Old French roi (inherited)

← Old French rei (mention)

← Proto-Indo-European *h₃rḗǵs (inherited)

← Latin rēgem (inherited)

← Latin rēx (mention)

→ English Charleroi (mention)

→ English roytelet (mention)

→ French royal (suffix)

→ French Roy (mention)

→ French Leroy (compound)

→ French vice-roi (mention)

→ French Vuong (mention)

→ French Filles du Roi (compound)

→ Haitian Creole wa (derived)

→ Mauritian Creole lerwa (derived)