There was also a strong denominational difference since about 95% of the inhabitants of Lithuania Minor were Lutherans while more than 90% of Greater Lithuanians were Catholics. Following the "Agreement concerning the Evangelical Church of the Klaipėda Region" () of July 23, 1925, concluded between the Directorate of the Klaipėda Region and the Evangelical Church of the old-Prussian Union, a church of united administration of Lutheran and Reformed congregations, the mostly Lutheran congregations (and a single Reformed one in Klaipėda) in the Klaipėda Region were disentangled from the old-Prussian "Ecclesiastical Province of East Prussia" and formed the Regional Synodal Federation of the Memel Territory (Landessynodalverband Memelgebiet) since, being ranked an old-Prussian ecclesiastical province of its own. An own consistory in Klaipėda was established in 1927, led by a general superintendent (at first F. Gregor, elected in 1927, succeeded by O. Obereiniger, elected by the regional synod in 1933). The Catholic parishes in the Klaipėda Region used to belong to the Bishopric of Ermland until 1926 and were then disentangled, forming the new Territorial Prelature of Klaipėda under Prelate Justinas Staugaitis.