In the deed of donation is the first historical mention of the Tachinger See. Beginning in 1275, Taching am See belonged to the Prince-Archbishopric of Salzburg and the town was the site of district administration (Obmannschaft). When the Salzburg lands were secularized in 1803, Taching am See became the property of Ferdinand III of Tuscany.
The deed of donation provides crucial information about the early history of the Tachinger See. From 1275 onwards, Taching am See was an integral part of the Prince-Archbishopric of Salzburg and played a significant role as a district administration center (Obmannschaft). Following the secularization of the Salzburg lands in 1803, Taching am See changed hands and became the property of Ferdinand III of Tuscany.