Austrian Circle

The Austrian Circle as at the beginning of the 16th century

The Austrian Circle (German: Österreichischer Reichskreis) was an Imperial Circle of the Holy Roman Empire. It was one of the four Imperial Circles created in 1512, 12 years after the original Reichsreform created six Circles.

The Austrian Circle was largely coterminous with the Erblande ("Hereditary Lands") of the Habsburg family and roughly corresponds to present-day Austria (except for Salzburg), Slovenia and the Trentino-Alto Adige/Südtirol region of Northern Italy.

Composition

Austrian Habsburg dominions (orange) about 1477,
William R. Shepherd, 1911

The circle was made up of the following states:

Name	Type of entity	Comments
An der Etsch	Bailiwick	Established about 1260, an administrative grouping of lands held by the Teutonic Knights in Tyrol
Austria	Archduchy	March of Austria established in 976 by Emperor Otto II, raised to duchy by Emperor Frederick I Barbarossa in 1156, to Habsburg in 1278, self-bestowed "Archduchy" since 1358
Austria	Bailiwick	An administrative grouping of lands held by the Teutonic Order in Austria
Brixen	Prince-Bishopric	Established in 1027 by Emperor Conrad II, Prince-Bishopric since 1179
Carinthia	Duchy	Established in 976 by Emperor Otto II, held by the Archdukes of Austria since 1457, part of Inner Austria 1564–1619
Carniola	Duchy	March of Carniola established in 1040 by Emperor Henry III, raised to duchy in 1364, held by the Archdukes of Austria since 1457, part of Inner Austria 1564–1619
Chur	Prince-Bishopric	Established in the 4th century, prince-bishopric since 1170, territory held by the League of God's House since 1367
Gorizia	County	Separated from the Patriarchate of Aquileia about 1127, held by the Archdukes of Austria from 1500, part of Inner Austria 1564-1619, merged into Gorizia and Gradisca in 1747
Istria	March	Established in 1040 by Emperor Henry III, major part to Venice in 1291, remaining territory around Pazin (Mitterburg) to Gorizia, held by the Archdukes of Austria since 1374
Styria	Duchy	March of Styria established about 970 by Emperor Otto I, raised to a duchy in 1180, held by the Dukes of Austria since 1192, part of Inner Austria 1564-1619
Swabian Austria	Landgraviate	The remaining Habsburg home territories in Swabia since 1386, including Breisgau, Burgau, Sundgau (until 1648) and parts of Vorarlberg, held by the Archdukes of Austria
Tarasp	Lordship	Held by the Archdukes of Austria since 1464
Trent	Prince-Bishopric	Established in 1027 by Emperor Conrad II
Trieste	City	Held by the Archdukes of Austria since 1382
Tyrol	County	Established about 1140, held by the Archdukes of Austria since 1363, raised to "Princely County" in 1504, to Further Austria 1564-1665