The other three brothers of Ivanauskas identified themselves with the other two nationalities of former Polish-Lithuanian Commonwealth, two (Jerzy Iwanowski  - politician and engineer and Stanisław Iwanowski - lawyer) chose to become Polish, and one Vacłaŭ Ivanoŭski  (politician) - Belarusian (although he would live in interwar Poland).
The other three brothers of Ivanauskas identified themselves with the other two nationalities of former Polish-Lithuanian Commonwealth, two (Jerzy Iwanowski - politician and engineer and Stanisław Iwanowski - lawyer) chose to become Polish, and one Vacłaŭ Ivanoŭski (politician) - Belarusian (edhe pse ai do të jetonte në Poloninë ndër luftarake). ^ "VMU Now and Before".