Herman VI, Margrave of Baden, had in 1248 married Gertrude of Austria, the niece of Duke Frederick II, and on the basis of this marriage claims the duchies of Austria and Styria, leaving the rule over Baden to his younger brother Rudolf.

Both the Emperor Frederick II and Margrave Herman VI are deceased by the end of 1250.

The latter having never been accepted by the Austrian nobles, Gertrude and their only son Frederick I, Margrave of Baden, continue their claim.

However, after the death of Emperor, no strong Imperial authority exists to assert his title.

Though he is backed by Pope Innocent IV and anti-king William of Holland, Frederick has been unable to prevail against the mighty Přemyslid king Wenceslaus I of Bohemia and his son Ottokar II, who upon Herman's death in 1250 occupies the Babenberg lands.

Escaping from the field of battle, Conradin had reached Rome but, acting on advice to leave the city, he proceeds to Astura in an attempt to sail for Sicily.

Here, however, he had been arrested and handed over to Charles, who has imprisoned him in the Castel dell'Ovo in Naples, together with Frederick of Baden, his inseparable companion since childhood.

He is tried as a traitor, and on October 29, 1268, he and Frederick are publicly beheaded.

The death of the sixteen-year-old Conradin extinguishes the Hohenstaufen family’s male line.

Following their defeat by Angevin-Guelph forces at Tagliacozzo, the name Ghibelline applies chiefly to local factions or even families.

Some northern Italian cities, such as Verona under the Scala and Milan under the Visconti, will remain Ghibelline, because their rulers are imperial vicars.