 The remaining pre-war population was treated as Germanized Poles and a policy of re-Polonization was pursued throughout the country Most of these "Autochthons" chose to emigrate to West Germany from the 1950s through 1980s (between 1970 and 1988 55,227 persons from Warmia and Masuria moved to Western Germany).Local toponyms were Polonised by the Polish Commission for the Determination of Place Names.During the Polish post-war census of December 1950, data about the pre-war places of residence of the inhabitants as of August 1939 was collected.