It is a Romance language with several distinct dialects that form a linguistic sub-group separate from Langue d'Oïl and Langue d'Oc. The name Franco-Provençal was given to the language by G.I. Ascoli in the 19th century because it shared features with French and Provençal without belonging to either. Today, the largest number of Franco-Provençal speakers reside in the Aosta Valley, an autonomous region of Italy. The language is also spoken in alpine valleys in the province of Turin, two isolated towns in Foggia, and rural areas of the Romandy region of Switzerland. The number of speakers of Franco-Provençal has been declining significantly. According to UNESCO (1995), Franco-Provençal is a "potentially endangered language" in Italy and an "endangered language" in Switzerland and France.