 He is assisted by auxiliary bishop Arūnas Poniškaitis.The Archdiocese owes its foundation to Jogaila, who Christened Lithuania in 1387 and sent Dobrogost, Bishop of Poznań as ambassador to the Pope Urban VI with a petition for the erection of an episcopal see at Vilnius and the appointment of Andrzej Wasilko (former Bishop of Siret and confessor of Elisabeth of Hungary) to fill it.This was granted and the foundation of a collegiate church of ten canons authorized.