 Piotr became voivode of Lublin Voivodship in 1537 and voivode of Ruthenian Voivodship in 1545.In 1514 he participated in the Battle of Orsza and was a trusted adviser of Queen Bona Sforza and King Zygmunt II August.He founded the cities of Janowiec and Lubartów and built castles there.