Claim: Portuguese, Spanish, Asturian-Leonese, Aragonese, Catalan, Gascon, Provençal, Gallo-Wallon, French, Franco-Provençal, Romansh, and Ladin are Western Romance Languages.
Evidence: Based on mutual intelligibility , Dalby counts a dozen languages : Portuguese , Spanish , Asturian-Leonese , Aragonese , Catalan , Gascon , Provençal , Gallo-Wallon , French , Franco-Provençal , Romansh , and Ladin.
Western Romance languages are one of the two subdivisions of a proposed subdivision of the Romance languages based on the La Spezia -- Rimini line.