ARENSBERG, one of the governments (regierungsbezirk) into which the Prussian province of Westphalia is divided. It is subdivided into 14 portions called circles (Kreis). It comprises within its limits part of the ancient duchy of Westphalia, the county of Mark, with Dortmund, the city of Lippstadt, the principality of Siegen, and the lordships of Witgenstein-Besleburg, Witgenstein-Witgenstein, and Hohen-Limburg. It extends over 3060 square miles, or 1,958,400 acres. The cities and towns are 74, the villages 1119. The inhabitants amounted in the year 1817 to 380,182, of whom 202,766 were Protestants, 178,826 Catholics, 3489 Jews, and 101 Menonites.