The Bishopric of Chur was first founded in 451, when Asinio was made Bishop of Chur. In 1170, Emperor
Frederick I raised the Bishopric of Chur to the title of Prince-Bishopric of Chur. In October 1621,
Colonel Baldiron of
Austria attacked the Prince-Bishopric of Chur, and the League of God's House as a whole, with 8,000 men. On November 22 of the same year, Baldiron and his soldiers captured Chur. In the ensuing peace deal, Austria took the
Lower Engadine from Chur, and retained the right to station troops in Chur, and use their roads. On October 27, 1624, an army of 8,000 French and Swiss soldiers attacked the Austrians stationed at Chur, led by the
marquis de Coeuvres. Because Austria had pulled much of her garrison back during spring, the 8,000 strong army quickly overtook the Austrian skeleton garrison, and seized Chur and the surrounding land. During the time of the
Transalpine campaigns of the Old Swiss Confederacy, the Three Leagues took control of
Valtellina,
Bormio, and
Chiavenna. ==Religion==