Adalbert the Victorious (c. 985 – 26 May 1055) was Margrave

Margrave

A margrave or margravine was a medieval hereditary nobleman with military responsibilities in a border province of a kingdom. Border provinces usually had more exposure to military incursions from the outside, compared to interior provinces, and thus a margrave usually had larger and more active...

 of Austria from 1018 until his death. He extended the eastern border of the then small Ostmark of Bavaria as far as the rivers Morava/March and Leitha and supported King Henry III

Henry III, Holy Roman Emperor

Henry III , called the Black or the Pious, was a member of the Salian Dynasty of Holy Roman Emperors...

 in his battles against Hungary

Hungary

Hungary , officially the Republic of Hungary , is a landlocked country in Central Europe. It is situated in the Carpathian Basin and is bordered by Slovakia to the north, Ukraine and Romania to the east, Serbia and Croatia to the south, Slovenia to the southwest and Austria to the west. The...

 and Bohemia

Bohemia

Bohemia is a historical region in central Europe, occupying the western two-thirds of the traditional Czech Lands. It is located in the contemporary Czech Republic with its capital in Prague...

. He resided in the Lower Austria

Lower Austria

Lower Austria is the northeasternmost state of the nine states in Austria. The capital of Lower Austria since 1986 is Sankt Pölten, the most recently designated capital town in Austria. The capital of Lower Austria had formerly been Vienna, even though Vienna is not officially part of Lower Austria...

n Babenberg

Babenberg

Originally from Bamberg in Franconia, now northern Bavaria, an apparent branch of the Babenbergs or Babenberger went on to rule Austria as counts of the march and dukes from 976–1248, before the rise of the house of Habsburg.-One or two families:...

 castle of Melk, where Melk Abbey

Melk Abbey

Melk Abbey or Stift Melk is an Austrian Benedictine abbey, and one of the world's most famous monastic sites. It is located above the town of Melk on a rocky outcrop overlooking the river Danube in Lower Austria, adjoining the Wachau valley....

 was to develop later.

He was married to Frowila Urseolo (who later took the name of Adelheid) the sister of Peter Urseolo of Hungary. He died at Melk

Melk

Melk is a city of Austria, in the federal state of Lower Austria, next to the Wachau valley along the Danube. Melk has a population of 5,222 ....

in 1055.