bogomer belonged to duke béla's confidants, who strongly opposed his father king andrew ii "useless and superfluous perpetual grants" which caused the derogation of the royal power in the realm. béla was made duke of slavonia in 1220, and bogomer was member of his ducal court, along with other young courtiers, for instance denis türje, paul geregye and pousa, son of sólyom. bogomer was mentioned as master of the cupbearers for duke béla by several charters throughout 1225.