History
The upper Surselva was first settled in the 9th century, following the foundation of
Disentis Abbey 
, as part of the
Cadi (feudal possessions of the abbey). In the 12th century, the Walser migrated across Oberalp Pass. Sedrun parish church was first consecrated in 1205. Both Romansh and Walser communities lived exclusively in dispersed settlements well into the early modern period.