This dynasty came to power when its first leader defeated Henry the Proud and his brother, and that man eventually married Getrude von Sulzbach.
According to legend one king of this dynasty changed his last name to "Nagel" because he liked that it meant "unmovable." Sophie, a woman of this descent married William of Montferrat, a pretender to the throne of the kingdom of Thessalonica. Another ruler of this descent was executed along with Frederick, duke of Margrave after fleeing at Tagliacozzo, and his successor provided the knights necessary to win the Battle of Montaperti. This dynasty came to power when its first leader defeated Henry the Proud and his brother, and that man eventually married Getrude von Sulzbach. In addition to that duke of Franconia and Manfred, the last of this line, a Holy Roman Emperor of this line was the subject of the raids resulting from the Diet of Roncaglia, a meeting called by the Lombard League. For 10 points, name this royal house which produced Frederick Barbarossa.
According to legend one king of this dynasty changed his last name to "Nagel" because he liked that it meant "unmovable."
Hohenstaufen