Argengau

The Argengau was a Carolingian county on the northeastern shore of Lake Constance in the area of ​​present-day states of Bavaria and Baden- Württemberg. Through the territory of the eponymous river Argen flows.

Documents from the 8th and 9th century BCE, following localities were assigned to the Argengau: Tettnang, Langenargen, Laimnau, Apflau, Haslach. Nachbargaue were among the other Hegau, the Linzgau and Schussengau, the latter might possibly have been only a Untergau of Linzgaus.

The earliest known Graf Argengau is Ruthard, considered the progenitor of Guelph ( 769 ). From 783 Ruadbert, possibly a great-grandson of Duke Gotfrid Alemanni, occupied as Count of Argengaus. His nephew Udalrich I of the Udalrichingern, brother of Charlemagne, followed him. 807 whose son Rodbert was mentioned in a document, which was replaced by a count of 824 Ruachar unknown origin. Louis the Pious gave the county to his brother, the Guelphs Konrad I.. 's Son, Welf II, lost the confidence of Louis the German, as his brothers sided with Charles the Bald. Ludwig sat then Udalrich III. ( a descendant of Udalrich I. ) a. His son Udalrich IV fell with Arnulf of Carinthia from grace and lost the count right around 890 at least temporarily. At least, can be found in the area but in the mid 11th century the Ulriche that Udalrichinger as Counts of Bregenz (Ulrich IX. , † before 1079, Count of Bregenz, Count of Argengau and Nibelgau ), and after these in the mid 12th century, the Montfort, with the line Montfort- Tettnang formed a principal lines here.