But by 1000 AD the Medieval Warm period led to better climate conditions allowing for population growth.
And the forced migration theory is supported by the fact that feudal lords in the area are recorded as having often relocated populations to ensure their control of territories.
[2][3] After leaving the Conches valley, most of those migrating passed through Val For-mazza in Italy on their way to the Rhaetian area of the Central Alps.
[4] From their origins in Valais, the Walsers migrated to areas in modern-day Aosta Valley, Vorarlberg, Bavaria, Ticino, Uri, Bern, and Grisons, Savoy, and possibly France.
A similar pattern can be observed across the areas of migration where Walsers would form pockets of Germanicism among a larger population of romance people.
[2] During and after the migration many communities collapsed due to the difficult lifestyle and end of the medieval warm period.
[6][7] In Switzerland they founded: Simplon, Bosco Gurin, Obersaxen, Vals, St. Martin, Versam, Valendas, Tenna, Safien, Medels, Nufenen, Splügen, Sufers, Hinterrhein, Avers, Arosa, Langwies, Mutten, Schmitten, Wiesen, Davos, Klosters, Furna, Says, St. Antönien, Valzeina In Italy: Gressoney-La Trinité, Gressoney-Saint Jean, Issime, Gaby, Formazza, Macugnaga, Alagna Valsesia, Rima San Giuseppe, Rimella In Austria: Blons, Fontanella, Raggal, St. Gerold, Sonntag, Thüringerberg, Mittelberg, Brandnertal, Silbertal, Laterns, Schröcken, Lech, Warth, Galtür In Liechtenstein: Triesenberg