Three Leagues

The Three Leagues, sometimes referred to as Raetia, was the alliance of 1471 of the League of God's House, the League of the Ten Jurisdictions, and the Grey League, leading eventually to the formation of the Swiss canton of Graubünden (Grisons).

The territory corresponds to the core territory of Raetia Curiensis (ruled by the bishops of Chur as Prince-Bishopric of Chur), the early medieval remnant of the Roman province of Raetia prima.

League of God's House

On 29 January 1367, the League of God's House (german: Gotteshausbund, it, Lega Caddea, rm, ), was founded to resist the rising power of the Bishopric of Chur and the House of Habsburg. Bishop Peter Gelyto reacted by transferring the bishopric to the Habsburgs in exchange for a pension from the ducal house.

The instrument of union was signed by envoys of the cathedral chapter, the episcopal Ministerialis, the city of Chur and the districts of Domleschg, Schams, Oberhalbstein, Oberengadin, Unterengadin and Bergell. Other districts joined the league subsequently, including the Poschiavo in 1408 and the Vier Dörfer in 1450.

For some time, Unterengadin, Münstertal and the upper Vinschgau were disputed between the Bishopric of Chur and the County of Tyrol. While the first two could shake off the rule of the Habsburgs as count of Tyrol, in 1618, Untercalven was separated from the League as the last part of the Vinschgau.

With its capital in Chur, the League was composed of the following districts:
*Chur
*Bergell: districts of Ober- and Unterporta
* Calven: districts of Obercalven (Münstertal) and Untercalven (Upper Vinschgau)
* Domleschg: districts of Ortenstein (since 1788 divided into: Ortenstein im Boden and Ortenstein im Berg) and Fürstenau
*Greifenstein: districts of Bergün and Obervaz
* Oberengadin: (divided since 1438) districts of Sur and Suot Funtauna Merla
* Oberhalbstein: districts of Oberhalbstein and Tiefencastel
*Poschiavo
* Ramosch-Stalla-Avers: districts of Ramosch and Stalla (Bivio)– Avers
* Unterengadin: districts of Ober- and Untertasna
* Vier Dörfer

Grey League

The Grey League ( rm, ) was founded in 1395 in the Upper Rhine valley, as a reaction to various feuds between the Barony of Belmont, the Lordship of Sax, the Barony of Rhäzüns, the Barony of Vaz, County of Werdenberg, Disentis Abbey and the Bishopric of Chur. The capital of the League was Ilanz. The name ''Grey League'' is derived from the homespun grey clothes worn by the people; the name of this league later gave its name to the canton of Graubünden.

In Trun, on 16 March 1424, a governing federation was established, comprising:
* The abbot and court of Disentis Abbey;
* The Baron of Rhäzüns — for himself, his lordship and his subject communities of Safien, Tenna and Obersaxen;
* The Baron of Sax-Misox — for himself and his subjects Ilanz, Gruob, Lugnez, Vals, Castrisch and Flims;
* The Count of Werdenberg-Heiligenberg with all his subjects, including Trin and Tamins;
* Communities above the Flimserwald, including Rheinwald and Schams.

Even before 1440, the lordships of Löwenberg, Thusis, Tschappina and Heinzenberg joined the League, despite the count of Werdenberg-Sargans having forbidden them from doing so. In 1441 Cazis Abbey joined; in 1480, the neighborhoods of Mesocco and Soazza in Misox and, in 1496, Gian Giacomo Trivulzio assisted with the union of the remainder of the county of Misox, with the districts of Misox and Calanca