Romansh language Grisons, the language borders largely stabilized in the 16th century and remained almost unchanged until the 19th century. This language area is often called the "Traditional Romansh-speaking territory", a term introduced by the statistician Jean-Jacques Furer based on the results of the Swiss censuses. Furer defines this language area as those municipalities in which a majority declared Romansh as their mother tongue in any of the first four Swiss censuses between 1860 and 1888. In addition, he includes Fürstenau. This represented 121 municipalities at the time, corresponding to 116 present-day municipalities. The villages of Samnaun, Sils im Domleschg, Masein, and
Romansh language language in the Surses, but has mostly disappeared from the Albula Valley. The highest proportion of habitual speakers is found in Salouf with 86.3%, the lowest in Obervaz with 18.9%. In these areas, many Romansh speakers only speak German with their spouses as an accommodation or because of a habit, though they sometimes speak Romansh to their children. In most cases, this is not because of a will to preserve the language, but because of other reasons such as Romansh having been their own childhood language or a belief that their children will later find it easier to learn additional