Herznach

While some Alamanni era graves have been discovered, the first mention of Herznach is in 1097 as Hercenahc. The Ministerialis family von Herznach and Herznach castle are both mentioned. The castle was built on the foundations of a manor house from the 7th-10th Centuries. was built. Originally both Herznach and Ueken were ruled by the Homberger family. In the early 14th Century, the Habsburgs had the right to judge and punish theft and other felonies in Herznach. Between the Imperial Reform of Maximilian I until the fall of the Ancien Régime it belonged to the Austrian District of Rheinfelden. The rights to Zwing und Bann were probably in the hands of the village cooperative.

The Church of St. Nicholas, probably a Homburger family church, is first mentioned in 1180. Starting in 1407 the patronage rights were transferred from the Habsburgs to the Collegiate church of Rheinfelden. In 1651 the nave and tower were expanded and renovated, while in 1718-19 the choir was completely rebuilt. The Chapel of Saint Verena was built in 1516 on the foundation of the Early and High Middle Ages manor chapel. Verena newly built chapel on foundations from the early and HochMA and belonged to the manor. Even today, Herznach and Ueken form a parish. Until the Protestant Reformation this parish included Densbüren and the village of Asp and until 1852 it included Zeihen. With the Act of Mediation in 1803, the Fricktal joined the Canton of Aargau and Herznach and Ueken became independent municipalities. The two former population centers Unterherznach and Oberherznach grew together along the road by 1811.

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