Jan Dominik Lopacinski (1708 - 1778), born in 1708. In Mstislav (now Belarus, Mogilev region), Lopacinski manor. He studied in Vilnius, Warsaw, St. Petersburg. At the Cross Seminary in 1732. V 8 he was ordained priest, appointed canon of Vilnius Cathedral and rector of the Vainiai Chapel. Bishop A. Tiškevičius appointed parish priest of Šiluva. Construction of a new brick church began, and an organ was installed under his care. He was a talented and energetic priest. The appointed bishop instructed the parish priests to describe their parishes accurately and in detail and to send the descriptions to Alsėdžiai. He invited priests to Varnius to test their theological knowledge and teach the less experienced. He called for proper preparation for Sunday sermons, for communicating the truths of the faith in an understandable way, and he took care of repairing churches, building new ones and establishing more parishes. During J. Lopacinskis' episcopate, churches and chapels were built or rebuilt: Konstantinava, Medingėnai, Budriiai, Pakražantis, Karklėnai, Radviliškis, Rozalimas, Pagramantis, Mosėdis, Šaukotas, Nemakščiai, built by himself Bishop, Bishop, Bishop, Bishop and Bishop. TurnedThe Varniai Cathedral has a marble floor, a new brick house for the vicars and choristers of the cathedral, a new seminary building for priests, a residence in Viržuvėnai (Janapolis), a garden park and the reconstruction of the bishop's palace in Alsėdžiai. He vigilantly followed the religious life of the diocese. He parked missionary priests in Varėnai and assigned them to the seminary. He supported the printing of books, and on his commission published "Kningiale apraszanti broctwa Families Szwentos" and "Metay Szwęti or Jubileusz Didis nuog Szwęciausia Tiewa Pius Sieszta"; he translated from French into Polish and published two books: "Zbior krotki histori koscielniej" and "Historya revolucyjskiej". He wrote two detailed accounts with the Holy See on the situation of the Samogitian diocese.