Walloons who turn up at local councils unable to speak Dutch must bring translators.
From the economist.com
Walloons became gradually integrated into Swedish society.
From the en.wikipedia.org
Walloons have their own grumbles.
From the time.com
More examples
An ethnic group speaking a dialect of French and living in southern and eastern Belgium and neighboring parts of France
(walloon) a member of the French-speaking people living in Belgium
A member of the French-speaking people living in Belgium
A dialect of French spoken in Belgium and adjacent parts of France
Walloons (Wallons, ; Walons) are a French-speaking people who live in Belgium, principally in Wallonia. The population is of mixed ancestry; asides French, it has Germanic and/or Celtic origin. More generally, the term also refers to the inhabitants of Wallonia. ...