From the upper Wallis, they began to spread south, west and east between the 12th and 13th centuries, in the so-called Walser migrations (Walserwanderungen).
Ülem-Valais'st hakkasid walserid 12. ja 13. sajandil lõunasse, läände ja itta levima, niinimetatud walserite ränne (Walserwanderungen).