"The following is a list of Dukes of Swabia in southwest Germany. Swabia was one of the five stem duchies of the medieval German kingdom, and its dukes were thus among the most powerful magnates of Germany. The most notable family to hold Swabia were the Hohenstaufen, who held it, with a brief interruption, from 1079 until 1268. For much of this period, the Hohenstaufen were also Holy Roman Emperors. With the death of Conradin, the last Hohenstaufen duke, the duchy itself disintegrated, although King Rudolf I attempted to revive it for his Habsburg family in the late-13th century."@en . "Dukes of Swabia"@en . . "The following is a list of Dukes of Swabia in southwest Germany. Swabia was one of the five stem duchies of the medieval German kingdom, and its dukes were thus among the most powerful magnates of Germany. The most notable family to hold Swabia were the Hohenstaufen, who held it, with a brief interruption, from 1079 until 1268. For much of this period, the Hohenstaufen were also Holy Roman Emperors. With the death of Conradin, the last Hohenstaufen duke, the duchy itself disintegrated, although King Rudolf I attempted to revive it for his Habsburg family in the late-13th century."@en . .