During the Middle Ages, the villages of Mülenen and Grenchen (now part of the municipality) were part of the Herrschaft of Weissenau Castle. Around 1334, the Freiherr of Weissenau joined other local nobles in a war against the growing power of the city of Bern.
During the Middle Ages, the villages of Mülenen and Grenchen (now part of the municipality) were under the control of Weissenau Castle's jurisdiction. Around 1334, the Freiherr of Weissenau joined other local nobles in a battle against Bern's growing influence.