I examine patterns of lexical variation in the homeland varieties of Faetar and Cellese, endangered Franco-provenal dialects spoken in two villages in southern Italy, and in Toronto, one of their largest migr communities. While lexical change due to borrowing has been in progress for some time in Faetar and Cellese, cross-generational and diatopic comparisons within a sample of 80 speakers surprisingly indicate that its lexicon is currently quite stable. The lack of systematic patterns of differentiation across age, sex, social class, and regional groups indicates that diachronic lexical variation may not be reflected synchronically in the same ways as the structural variables that form the majority of quantitative sociolinguistic investigation. This suggests the need for further comparisons across types of variables, while maintaining consistent methods of data collection, analysis, and interpretation.