Yes, there are books written about Irena Sendler, a Polish social worker who saved approximately 2,500 Jewish children during the Holocaust. Some examples include "Irena's Children: The Extraordinary Story of the Woman Who Saved 2,500 Children from the Warsaw Ghetto" by Tilar J. Mazzeo and "The Mother of the Holocaust Children: The Irena Sendler Story" by Anna Mieszkowska.
Irena Miliankova goes by Irena.
Irena Szymanska's birth name is Irena Wiernik.
Irena Horecka's birth name is Irena Hones.
Irena Hrehorowicz's birth name is Irena Sawka.
Irena Sendlerowa's birth name is Irena Stanislawa Krzyzanowska.
Irena Miliankova's birth name is Irena Milyankova.
Irena was 98 when she died.
Irena Orlov was born in 1942.
Irena Bobowska was born in 1920.
Irena Bobowska died in 1942.
Irena Grafenauer was born in 1957.
Irena Sibley was born in 1944.