Abbey of Saint Gall
Hefenhofen is first mentioned in 817 as "Hebinhova". Hefenhofen was a fief of the Abbey of Saint Gall and until the 17th Century it was part of the Bailiwick of Hagenwil. In 1600, the low court of Hefenhofen was formed, which included Auenhofen, Hatswil, Moos and Tonhub. In 1644 the Lords of Bernhausen divided their lands, which included Hefenhofen. From 1644 until 1798 a number of different individuals owned the village.