Dating service Freiburg im Breisgau
In addition, the Welf family, while establishing themselves definitively as dukes of Bavaria in 1096, remained major landowners in Swabia where contemporary sources such as necrologies show that they also used the title dux.Besides these major families, numerous lesser noble families enjoyed limited territorial influence in Swabia around the castles which they constructed.In the southern area, now German-speaking Switzerland, these were, from west to east: Aargau which bordered the Rudolfian kingdom of Burgundy, Zrichgau with the town of Zrich in its northern part, Thurgau immediately south of lake Constance, and Rheingau straddling the upper reaches of the Rhine before it flows into Lake Constance.South of the Rheingau lay the area of Chur-Rtien, in what is now the Swiss canton of Graubnden.The list is undated, but the inclusion of the brothers Adalbert and Hartmann Grafen von Dillingen und Kiburg enable it to be dated to after , when their father died.Further precision in the dating is possible by identifying which "Friedrich Duke of Swabia" is named. The only possibilities are therefore Duke Friedrich III, who resigned the dukedom in March 1152 when he was elected as Friedrich I "Barbarossa" King of Germany, or his successor Duke Friedrich III who was installed as duke in 1152.
An example is provided by the Zhringer, which concentrated on building influence around the town of Freiburg im Breisgau, before Duke Konrad extended his ambitions into Burgundy in 1127.
The close-knit nature of this group of nobles is confirmed by the number of marriages between those named or their immediate families, as can be traced below.
The Swabian nobility is shown geographically in this document, divided into the "gau" of which the duchy of Swabia was originally constituted.
This represented the first occasion when two individuals both peaceably held the title dux at any one time in any of the original German provinces.
The dukes of Zhringen developed considerable political influence in central Europe before their extinction in the male line in 1218.