Lithuanian and Polish vocalist (dramatic soprano). In Polish: Jadwiga Pietraszkiewicz (after marriage: Michońska). She was educated at Vilnius conservatoire. Lived in Poland from 1959. Soloist of Big Theatre in Łódź (1962–1982). Born 1919, died 2013 in Łódź, Poland.
https://pl.wikipedia.org/wiki/Jadwiga_Pietraszkiewicz