Bolesław I however did not aid Henry II in his Italian campaign, and refused to recognize that Lusatia and Upper Lusatia were his only as fiefs. Instead, he supported Crescentian antipope Gregory VI and intrigued against Henry II in Italy, who had denied Gregory his support in Pöhlde. Henry II started his Italian campaign in the fall of 1013, defeated the allies of the Crescentians and had pope Benedict VIII crown him Holy Roman Emperor in Rome on 14 February 1014. Bohemian duke Oldrich (Udalrich) meanwhile captured Bolesław I's son, Mieszko, and turned him over to Henry II, who however released him.