Kačergius

Cf. lit. Kačérga, Kačer̃gis, Kačerginskis (see). Often, apparently, nicknames associated with lit. in Slavism kačérga „žarstiklis, maišiklis; aukšto ūgio žmogus“ (LKŽ V 30). However, sometimes surnames themselves can be borrowed, cf. Brus Качаpга, Качэpга, Russian. Кoчеpга, Кoчеpгинский ¹.