Principality of Halych
Marcellus participated in King Andrew's royal campaign against the Principality of Halych in 1211. He was appointed Judge royal for the second time in 1211 and held the office until the next year. Beside that he also functioned as "ispán" of Keve County between 1211 and 1212. Two years later, in 1214, he again served as Judge royal for the third and final time. He was also head of Csanád County during that time. Marcellus's lands and estates were laying mostly south to the Drava River.