[2] In 1494 Erazm Ciołek (future Bishop of Płock) became the secretary of Polish king Alexander Jagiellon and one of his favorite courtiers.
In Rome, Ciołek discussed Alexander's marriage and possible divorce from Helena of Moscow, who was an Eastern Orthodox.
Helena's father, Ivan III of Russia, accused Alexander of religious intolerance and used it as a pretext for the renewed Muscovite–Lithuanian War (1500–1503).
Active in politics, due to intrigues by his opponents, he lost the favor of king Sigismund I the Old, and did not succeed in his goal of becoming a cardinal.
Erazm Ciołek of Mogiła restored the Monastery to its former glory, and served as ambassador to King Sigismund I.