Angevin is the traditional langue d'oïl spoken in Anjou, a historic province in western France. It was also spoken in neighboring regions like the Pays Nantais (along with Gallo), Maine (along with Mayennois) and Touraine (along with Tourangeau). It is also similar to the Gallo language (although Gallo has a stronger Celtic linguistic substrate that comes from Breton and not only from ancient Gaulish language). Angevin influenced the origin and development of Gallo in the Marches of Neustria (especially in the Breton March) beginning in the 9th and 10th centuries.