 After King Henry III of Germany had inherited the Duchy Carinthia, he in 1040 established the separate Marches of Istria and Carniola.As his wife's mother was related to the Bavarian Counts of Ebersberg, who held possessions in Carniola, Poppo was also appointed Carniolan margrave.Hadamut gave him one son, Ulric I, who succeeded his father in 1045.