 In the 16th century, the Latin diocese of Nakhchivan's actual see (not the title) was moved to more central Aparan, closer to the actual Catholic communities.Around 1620, Pope Gregory XV instigated the founding of a Fratres Unitores (exclusive Armenian Dominican order branch) seminary in Aparan.The see was elevated on 21 February 1633 as non-Metropolitan Archdiocese of Nakhchivan, but diocesan activity seemingly effectively halted later that century.