Its territory corresponded to the left banks of the Alpine Rhine between Hoher Kasten and Lake Constance, including the towns of Altstätten and Rheineck.

Marbach, Berneck and Altstätten allied with Appenzell in the Bund ob dem See, in the first union of the Rhine Valley from Rheineck to Kriessern.

Nevertheless, Appenzell was forced to cede the governing protectorship of the Valley to the warring powers — the Abbey and the four cantons of Glarus, Lucerne, Schwyz and Zürich — bringing the bailiwick into the ambit of the Old Swiss Confederation as a Gemeine Herrschaft (condominium).

Through the defeat of the Catholic hegemony over Switzerland and the end of the lengthy religious disputes that had riven the Confederacy, the 11 August 1712 Peace of Aarau (German: Frieden von Aarau) established confessional parity, allowing both religions to coexist in legal equality — a concept relatively common to the Holy Roman Empire since the Peace of Westphalia in 1648.

Within weeks, however, this nascent independence was quashed with the inclusion of the Rheintal into the Helvetic canton of Säntis, with the exception of Rüthi and Lienz, assigned to Linth.