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In page Walloons:

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The Walloon language is an element of Walloon identity. However, the entire French-speaking population of Wallonia cannot be culturally considered Walloon, since a significant portion in the west (around Tournai and Mons) and smaller portions in the extreme south (around Arlon) possess other languages as mother tongues (namely, Picard, Champenois, Lorrain, Flemish, German and Luxembourgish).[citation needed]