45 Mention must also be made here of the college dedicated to St. Josaphat, erected on the Janiculum and munificently endowed by our predecessor Pius XI. Selected young men had for centuries been prepared for the priesthood in the Pontifical College of the Greeks, and then in 1897 another of our predecessors, Leo XIII, established a special college at Rome for young Ruthenians divinely called to the priesthood. Finally, as we have said, since this building had become inadequate for the increasing number of students, our immediate predecessor, conformably to his special love for the Ruthenian people, built it new and larger premises, so that in them candidates for the priesthood should be instructed and formed in sacred learning and the special discipline of their rite, and should happily grow in reverence, obedience and love towards the Vicar of Jesus Christ, for the future welfare of the Ruthenian Church.
Source: Orientales Omnes Ecclesias (Vatican.va)