Adalbero, a member of the Otakar dynasty, was Margrave of Styria from 1075 until 1082.
Background
He was the eldest son of Margrave Ottokar I of Styria and his wife Willibirg of Eppenstein, possibly a daughter of Duke Adalbero of Carinthia.
Career
He succeeded as margrave upon the death of his father in 1075.