Zagorje was part of eastern Hum, which at the time was a province of the Serbian Kingdom under Stephen Uroš II Milutin, while western Hum had been taken by Paul I Šubić of Bribir, the Ban of Croatia, amid the dynastic civil war between Stephen Uroš II Milutin and Stephen Dragutin of Syrmia.

[1] He and his associate župan Poznan Purćić plundered in Hum;[1] Bogopenec is mentioned for the first time in Ragusan documents, in the Diversa Cancellarie from the year 1306;[7] (dated to 20[8] or 24 May[2]) when Ragusan nobleman Toma Držić (Thomadus de Dersa) complained to the Republic about the plundering and hijacking of a cargo filled with textile goods from Večerić, worth 800 perpers, in which Bogopenec participated in.

[1][2][8] Later, on 7 January 1307, a Đurko gave his testimony to the Ragusan knez and judges that he had been in Broćna, in Hum, when Nikifor Ranjina sued Bogopenec, Purćić and Aljen Bogavčić, and their associates, in front of knez Konstantin.

[5] Bogopenec, Purćić and Bogavčić were the most powerful nobility of Hum in the beginning of the 14th century.

[9] Bogopenec was the founder of the House of Sanković and was the father of župan Milten Draživojević, who was in the service of Stephen II, Ban of Bosnia.