The seminary was founded in 1627 dallos Nicholas bishop of Győr. Jesuits introduced the institution at this time point. In 1684 25 thousand forints Rhine Foundation bishop György Széchenyi in the building of the Diocesan Seminary. It was built in the first two levels of today's "old seminary" buildings, today Diocesan Treasury and Library. Bishop Sinzendorff Philippines in 1732 expanded the building and leadership entrusted to the Benedictine monks of Pannonhalma. Management of the institution later Dominicans, Piarists and the Jesuits have seen it again.