Andrew III of Hungary
Gregory Bicskei (; died 7 September 1303) was a prelate in the Kingdom of Hungary at the turn of the 13th and 14th centuries. He was the elected Archbishop of Esztergom between 1298 and 1303. Supporting the claim of the Capetian House of Anjou, he was a tough opponent of Andrew III of Hungary. He crowned Charles I of Hungary king with a provisional crown in 1301. He was murdered in Anagni by soldiers whom Philip IV of France had sent to Italy to capture Pope Boniface VIII.