After the umbrella bailiff had reverted to the Konstanz Cathedral monastery over the Fischingen monastery in 1237 , around 1240 Bishop Heinrich von Tanne combined possessions from the episcopal rule with the newly acquired estates in the Tannegg office. The rule, which was temporarily pledged to the Counts of Toggenburg , was administered by bailiffs at Tannegg Castle . In 1407 the office was devastated by fires during the Appenzell Wars , and in 1411 the people of Zurich set fire to the area. After Bishop Albrecht Blarer had redeemed the pledged rule with funds from the court subjects, his successor Otto III committed himself in 1411 . von Hachberg documented that the rulership would no longer be pledged or sold. This promise was renewed by his successors in office in the form of so-called letters of freedom . 1432 the Office received an opening .
In 1693, Bishop Marquard Rudolf von Rodt had the opportunity to buy a lordship near Meersburg . In order to finance it, despite the letters of freedom, he sold the distant Tannegg estate, which the Fischingen monastery acquired for 35,000 guilders that same year . The Tannegger office was closely connected with the so-called old Fischinger court, which consisted of Fischingen , Bichelsee , Balterswil , Ifwil and probably Au . In 1798, the Tannegg rule ended with the establishment of the Helvetic Republic .
Dominion
Boundaries of the old Mosnang court, which is divided into three parts and belongs to the Tannegg lordship. The lying outside these limits area Mosnangs belonged to fürstäbtischen Lower Court Bazenheid .
Bernhard Anderes, Josef Hagmann: Community of Mosnang. Cultural history and art Mosnang-Mühlrüti-Libingen . Kalberer, Bazenheid 1996, ISBN 3-9520633-2-0 , pp.15-19 .
