LUCK [LUTSK], DIOCESE OF. - City and diocese in Poland, suffragan of Lviv. The diocese was founded in 1358 by Innocent VI, but with the episcopal see at Włodzimierz Wołyński, confirmed in 1375 by Gregory XI. Its first bishop was Peter the Dominican. In 1428 Bishop Andreas Sptawski transferred the see to Łuck. From the beginning of the 16th century the bishops bore the title of Łuck and Brześć, because they often used to reside in the latter city. In 1797 the diocese was united with that of Żytomierz, where in 1844 the episcopal see was also transferred; but on 28 Oct. 1925 it returned to Łuck, the bishopric of Żytomierz having been re-established.
At present the whole diocese is under Soviet occupation. In 1939 it counted 398,000 Catholics, 185 parishes, 246 diocesan priests and 15 regulars. Eminent bishops: Gregory the Dominican (d. 1425); Jerzy Falczewski (d. 1548); Wiktorjan Wierzbicki, who convoked the first synod (d. 1588); Paweł Algimunt Prince Holszański, later bishop of Vilnius, took part in the Lateran Council in 1512 (d. 1535); Bernard Maciejowski, later primate and cardinal (1548-1608); Marcin Szyszowski (1554-1630); Henryk Firlej, later primate of Poland (d. 1626); Aleksander Lipski, later bishop of Kraków and cardinal (1690-1745); Franciszek Kobielski (d. 1755); Adam Stanisław Naruszewicz, bishop of Smolensk, historian and poet (1733-96).
THE RUTHENIAN BISHOPRIC AT WŁODZIMIERZ WOŁYŃSKI. - The "Orthodox" bishopric was founded there in the 11th century and had as its first bishop Stefan (d. 1094). After the Union with Rome of 1595-96, the first united bishop was Hipacy Pociej, metropolitan of Kiev (1541-1613). In 1795, after the third partition of Poland, the bishopric was suppressed by Tsarina Catherine II.
THE RUTHENIAN BISHOPRIC AT ŁUCK. - The "Orthodox" bishopric was founded there in 1327 and had as its first bishop Teodozjusz. He and his successors bore the title of bishops of Łuck and Ostróg and of "exarchs of all Ruthenia." After the Union with Rome of 1595-96, the first united bishop was Cyryl Terlecki (d. 1607). The bishopric fell in 1826 under Russian domination and was suppressed by Emperor Nicholas I.