Who is XXX's father?
Irena Sendler
Irena Sendler (née Krzyżanowska), also referred to as Irena Sendlerowa in Poland, nom de guerre ``Jolanta'' (15 February 1910 -- 12 May 2008), was a Polish nurse and social worker who served in the Polish Underground in German-occupied Warsaw during World War II, and was head of the children's section of Żegota, the Polish Council to Aid Jews (Polish: Rada Pomocy Żydom), which was active from 1942 to 1945.