Muri Abbey
Islisberg is first mentioned in 1185 as "Nidolperhc". In 1305 it was mentioned as "Isbolzberg". In the 13th Century it was a Habsburg bailiwick. The main landholders in the village were Muri Abbey, Frauenthal Abbey and the Monastery of St. Leodegar in Lucerne. In 1414 Bremgarten gained the right to low justice in the village, a right that it held until 1797. After 1415, Zurich exerted the rights to high justice over the "Kelleramt", including Islisberg.