either Saxony or Bavaria. Alamannia was one of the jüngeres Stammesherzogtum, one of the "younger" stem duchies, or tribal duchies, which formed the basis of the political organisation of East Francia after the collapse of the Carolingian dynasty in the late 9th and early 10th centuries. In the 10th century, no noble house of Alamannia succeeded in founding a ducal dynasty, as the Ottonians did in Saxony or the Liutpolding in Bavaria, though the Hunfridings came closest. The duchy encompassed the area surrounding Lake Constance, the Black Forest, and the left and right banks of the Rhine, including Alsace and parts of the Swiss plateau, bordering on Upper Burgundy. The boundary with Burgundy, fixed in 843, ran along the lower Aare, turning towards the south at the Rhine, passing west of Lucerne and across the Alps along the upper Rhône to the Saint Gotthard Pass. In the north, the boundary ran from the Murg (some 30 km south of Karlsruhe) to Heilbronn and the Nördlinger Ries. The eastern boundary was at the Lech. Argovia was disputed territory between the dukes of Alamannia and Burgundy. Burchard II, son of the late Burchard I and count in Raetia Curiensis, took the title of duke of Swabia, Duke acknowledged by the newly elected king Henry the Fowler in 919. The duchy of Swabia was ruled by the Hohenstaufen during 1079–1268 and was disestablished with the execution of Conradin and its territory was politically fragmented during the succeeding interregnum period. Legacy Alemannic German persists as a separate family of dialects within High German. The distribution of the Low Alemannic and High Alemannic subgroups largely correspond to the extent of historical Alemannia, while the Highest Alemannic dialects spread beyond its limits during the High Middle Ages. The Brünig-Napf-Reuss line is a cultural boundary within High Alemannic which marks the division of Alemannia proper and the Argovia marches between Alemannia and Burgundy. The names for Germany in modern Arabic (), Catalan (Alemanya), Welsh (Yr Almaen), Cornish (Almayn), French (Allemagne), Persian (ألمان), Galician-Portuguese (Alemanha), Spanish (Alemania), and Turkish (Almanya) all derive from Alamannia. A similar correspondence exists for "German", both as the language and the adjectival form of "Germany". List of rulers of Alamannia Independent kings The following are the known names of early Alemannic kings. They did not necessarily rule all of Alamannia, but were more likely petty kings ruling over smaller tribes or cantons, e.g.