The knightly family who lived there was heavily involved in a feud in the 14th century with the landlord, the Archbishop of Trier.

Freienfels Castle was built about 1300, presumably by the Diez family’s Weilnau branch.

The municipal election held on 26 March 2006 yielded the following results: Weinbach has maintained a partnership arrangement with the Polish community of Debrzno, roughly 150 km southwest of Gdańsk in the Pomeranian Voivodeship, since 1992.

Since 2005, another partnership has existed with the Czech community of Blatno, which lies roughly 50 km south of Chemnitz, right at the Reitzenhain border crossing above the town of Chomutov.

Until 1969, the centre of Freienfels was also linked to the rail network by the now abandoned Weiltalbahn.