 Glatten was first mentioned in 767.The historical place named "Glatheim" and "villa Gladeheim" mean "Home of the Straight" (glad, glat = shiny, bright, pure) and are indications of origin in the Merovingian period.In 1308 the Count of Hohenberg acquired as a pledge by Anna von Fürstenberg and her husband John of Geroldseck with Dornstetten also Glatten.