ɪt wʌz ɐdmˈɪnɪstɚd wɪð nˈuː ˈiːst pɹˈʌʃə fɹʌm wˈʌn θˈaʊzənd sˈɛvənhˈʌndɹɪd nˈaɪnti fˈaɪv ˈɑːnwɚdz, ʌntˈɪl ɪn wˈʌn θˈaʊzənd ˈeɪthˈʌndɹɪd sˈɛvən ɪt bɪkˌeɪm pˈɑːɹt ʌvðə næpˈoʊlɪˈɑːnɪk dˈʌtʃi ʌv wˈɔːɹsɔː ɐkˈoːɹdɪŋ tə ðə tɹˈiːɾiz ʌv tˈɪlsɪt.
It was administered with New East Prussia from 1795 onwards, until in 1807 it became part of the Napoleonic Duchy of Warsaw according to the Treaties of Tilsit.