Adalbero (died about 1082/86), a member of the Otakar dynasty, was Margrave of Styria from 1075 until 1082.

Biography

He was the eldest son of Margrave

Ottokar I of Styria Ottokar I, also Otakar (died 29 March 1075) was count in the Bavarian Chiemgau and Margrave of Styria from 1056 until his death. He became progenitor of the dynasty of the Otakars. Biography He was the son of Count Otakar V in the Chiemgau (di ...

and his wife Willibirg of

Eppenstein Eppenstein is a former municipality in the district of Murtal in the Austrian state of Styria. Since the 2015 Styria municipal structural reform, it is part of the municipality Weißkirchen in Steiermark. Eppenstein lies in the Lavanttal Alps ...

, possibly a daughter of Duke Adalbero of Carinthia. He succeeded as margrave upon the death of his father in 1075. Like his father, Adalbero sided with Emperor Henry IV in the fierce

Investiture Controversy The Investiture Controversy or Investiture Contest (, , ) was a conflict between church and state in medieval Europe, the Church and the state in medieval Europe over the ability to choose and install bishops (investiture), abbots of monasteri ...

, which led to a confrontation with his younger brother Ottokar II, an ally of

Pope Gregory VII Pope Gregory VII (; 1015 – 25 May 1085), born Hildebrand of Sovana (), was head of the Catholic Church and ruler of the Papal States from 22 April 1073 to his death in 1085. He is venerated as a saint in the Catholic Church. One of the great ...

. In 1082 Adalbero finally was forced to resign in favour of his brother and was killed shortly afterwards. {{Authority control Year of birth unknown Styria, Adalbero of 11th-century nobility from the Holy Roman Empire

Adalbero Adalbero or Adalberon () is a masculine given name, a variant of Adalbert, derived from the Old High German words ''adal'' ("noble") and '' beraht'' ("bright") or '' bero'' ("bear"). It may refer to: * Adalbero I of Metz (died 962), bishop * Adalbe ...