Counts of Freiburg

The Zähringer were extinct in 1218, with the death of Berthold V, Duke of Zähringen, to the benefit of the House of Baden, represented by Herman V, Margrave of Baden-Baden (r. 1190–1243).

His son was Konrad I (1236-1272)[citation needed], under whose reign a division of the estate with the princely house of Fürstenberg took place, sometime before 1245.

It acquired the monastery St. Märgen in the Black Forest with its bailiwick, as well as the appertaining village principalities and properties.

Johann, the last Count of Freiburg, bequeathed his estate, Badenweiler, to the sons of his nephew, the Margrave Wilhelm of Hachberg-Sausenberg, in 1444.

His sons, Rudolf and Hugo, united the baronies, Rötteln, Sausenberg, and Badenweiler to form the Markgräflerland.