Irena Sendler

1910 - 2008

Photo of Irena Sendler

Icon of person Irena Sendler

Irena Stanisława Sendler (née Krzyżanowska), also referred to as Irena Sendlerowa in Poland, nom de guerre Jolanta (15 February 1910 – 12 May 2008), was a Polish humanitarian, social worker, and nurse who served in the Polish Underground Resistance during World War II in German-occupied Warsaw. From October 1943 she was head of the children's section of Żegota, the Polish Council to Aid Jews (Polish: Rada Pomocy Żydom).In the 1930s, Sendler conducted her social work as one of the activists connected to the Free Polish University. From 1935 to October 1943, she worked for the Department of Social Welfare and Public Health of the City of Warsaw. Read more on Wikipedia

Since 2007, the English Wikipedia page of Irena Sendler has received more than 2,181,768 page views. Her biography is available in 57 different languages on Wikipedia (up from 56 in 2019). Irena Sendler is the 17th most popular social activist (up from 22nd in 2019), the 14th most popular biography from Poland (up from 25th in 2019) and the 2nd most popular Polish Social Activist.

Irena Sendler was a Polish woman who saved 2,500 Jewish children from the Nazis by smuggling them out of the Warsaw Ghetto.

Memorability Metrics

  • 2.2M

    Page Views (PV)

  • 80.97

    Historical Popularity Index (HPI)

  • 57

    Languages Editions (L)

  • 9.79

    Effective Languages (L*)

  • 2.85

    Coefficient of Variation (CV)

Page views of Irena Sendlers by language


Among social activists, Irena Sendler ranks 17 out of 544. Before her are Helen Keller, Guy Fawkes, Jean-Paul Marat, Johann Heinrich Pestalozzi, Rosa Parks, and Claus von Stauffenberg. After her are Lady Godiva, Thomas Müntzer, Robert Owen, Olympe de Gouges, Aung San Suu Kyi, and Gustav I of Sweden.

Most Popular Social Activists in Wikipedia

Go to all Rankings


Among people born in 1910, Irena Sendler ranks 4Before her are Mother Teresa, Akira Kurosawa, and Jacques Cousteau. After her are Giuseppe Meazza, Gloria Stuart, Robert K. Merton, Ingrid of Sweden, Django Reinhardt, Konrad Zuse, Jean Genet, and Paulette Goddard. Among people deceased in 2008, Irena Sendler ranks 3Before her are Aleksandr Solzhenitsyn and Yves Saint Laurent. After her are Edmund Hillary, Paul Newman, Bobby Fischer, Arthur C. Clarke, Charlton Heston, Suharto, Albert Hofmann, Samuel P. Huntington, and Chinghiz Aitmatov.

Others Born in 1910

Go to all Rankings

Others Deceased in 2008

Go to all Rankings

In Poland

Among people born in Poland, Irena Sendler ranks 14 out of 1,231. Before her are Paul von Hindenburg (1847), David Ben-Gurion (1886), L. L. Zamenhof (1859), Heinz Guderian (1888), Lech Wałęsa (1943), and Günter Grass (1927). After her are Daniel Gabriel Fahrenheit (1686), Johann Gottfried Herder (1744), Manfred von Richthofen (1892), Janusz Korczak (1878), Fritz Haber (1868), and Isaac Bashevis Singer (1902).


Among social activists born in Poland, Irena Sendler ranks 2Before her are Rosa Luxemburg (1871). After her are Ferdinand Lassalle (1825), Mordechai Anielewicz (1919), Leopold Trepper (1904), Jan Karski (1914), Jan Gotlib Bloch (1836), Ryszard Siwiec (1909), and Ernestine Rose (1810).