Argengau

Argengau was a territory of Alemannia within

East Francia East Francia (Medieval Latin: ) or the Kingdom of the East Franks () was a successor state of Charlemagne's empire ruled by the Carolingian dynasty until 911. It was created through the Treaty of Verdun (843) which divided the former empire int ...

in the 8th and 9th centuries, being a county in the 9th century,Smith, Julia M.H. "Einhard: The Sinner and the Saints" ''Transactions of the Royal Historical Society'', Vol. 13 (2003) 55-77 cites Count Conrad of Argenau, 59. and of the

Duchy of Swabia The Duchy of Swabia ( German: ''Herzogtum Schwaben'') was one of the five stem duchies of the medieval German Kingdom. It arose in the 10th century in the southwestern area that had been settled by Alemanni tribes in Late Antiquity. While th ...

in the 10th. It was situated north of

Lake Constance Lake Constance (german: Bodensee, ) refers to three bodies of water on the Rhine at the northern foot of the Alps: Upper Lake Constance (''Obersee''), Lower Lake Constance (''Untersee''), and a connecting stretch of the Rhine, called the Lak ...

, comprising

Lindau Lindau (german: Lindau (Bodensee), ''Lindau am Bodensee''; ; Low Alemannic: ''Lindou'') is a major town and island on the eastern side of Lake Constance (''Bodensee'' in German) in Bavaria, Germany. It is the capital of the county ('' Landkreis ...

. It was named for the Argen river. Alamannien Hochburgund ca 1000

Notes Geography of Baden-Württemberg {{Germany-geo-stub