Alt-Ehrenfels
Hayingen, The county of Reutlingen
In the 13th century, the castle belonged to the Lords of Ehrenfels, who possibly were so-called Ministerialis of Gundelfingen. In 1257 a certain Anselm of Ehrenfels is mentioned. From 1474 onward, it was part of the Zwiefalten monastery and in 1515 Abbot Sebastian of Zwiefalten ordered it to be destroyed.