Beinwil am See

There are traces of neolithic, Hallstatt, Roman and Alamanni settlements in or near Beinwil. However, Beinwil am See is first mentioned in 1036 as Beinwile. In 1045 it was mentioned as Peinuuilare. The noble von Beinwil family is first mentioned in 1153. This family was, in succession, vassals to the Lenzburg, Kyburg and Habsburgs before becoming extinct in the mid-14th Century. The family castle has disappeared. The power of Zwing und Bann over the village, were inherited in about 1300 by the Stewards of Wolhusen, then donated in 1501 to Beromünster, and sold in 1520 to Bern. The Counts of Hallwyl owned land on the lake to safeguard their maritime rights, which were first stipulated in 1419.
Starting with the conquest of the Aargau in 1415 by Bern, until the French conquest and creation of the Helvetic Republic in 1798, the rights to high and low justice were held by the bailiff in Lenzburg. Following the collapse of the Helvetic Republic and the creation of the Canton of Aargau in the 1803 Act of Mediation, Beinwil came to the newly formed Canton.

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