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'Frederick II', known as 'the Quarrelsome' or 'the Warlike' (
German: ''Friedrich der Streitbare'';
1201 –
15 June 1246), from the dynasty of the
Babenbergers, was the
duke of
Austria and
Styria from
1230 to
1246.
He was the second, but the only surviving son of Duke
Leopold VI and
Theodora Angelina, a
Byzantine princess. His first spouse was another Byzantine princess named Sophia Laskarina, of the
Laskaris dynasty, and his second wife was Agnes of Meran. He had no surviving children, and the male line of the
Babenberg dynasty ended with him.
Frederick was known as ''the Quarrelsome'' because of his frequent wars against his neighbors, primarily with
Hungary,
Bavaria and
Bohemia. Even the
Kuenringer family, which had so far been faithful to the ruling house, started an insurgency as soon as his reign began. But most dangerous were his disputes with Emperor
Frederick II, who ostracized him in 1236. During the years of his
ban,
Vienna became an
imperial free city for some years. However, he managed to maintain his position in
Wiener Neustadt. In 1239, in a spectacular change in imperial politics, Frederick became one of the emperor's most important allies. Negotiations about the elevation of Vienna to a bishopric and of Austria (including Styria) to a
kingdom were initiated. However, the duke's niece
Gertrude would have had to marry the almost fifty-year-old emperor, which the girl refused.
In the year before his death, he finally succeeded in gaining the
Duchy of Carniola, but his death led to it going to the
duke of Carinthia.
Duke Frederick finally died in a battle against the Hungarian king
Béla IV by the
Leitha river.
As the last Babenberg duke, Frederick the Quarrelsome signifies the end of an era in the
history of Austria. With his overambitious plans, which were frequently foiled by his erratic character, he somewhat resembled his later successor
Rudolf IV. As the
Privilegium Minus also allowed women to inherit, his sister
Margaret and his niece
Gertrude would have been entitled to the throne. Gertrude first married
Vladislav, Margrave of Moravia, who soon died, then
Herman VI, Margrave of Baden, who did not manage to maintain his position in Austria, and later
Roman of Halicz, a relative of the king of Hungary. Margaret was married to
Premysl Ottokar II of Bohemia, more than twenty years her junior. Subsequently, Austria became of field of conflict between the
Přemyslid and
Arpad dynasties, in which Ottokar would prevail until being overthrown by
Rudolph of Habsburg.