Irena Sendler

1910 - 2008

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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. Read more on Wikipedia

Since 2007, the English Wikipedia page of Irena Sendler has received more than 2,892,918 page views. Her biography is available in 61 different languages on Wikipedia (up from 60 in 2019). Irena Sendler is the 27th most popular social activist (down from 24th in 2019), the 41st most popular biography from Poland (down from 33rd 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

  • 2.9M

    Page Views (PV)

  • 71.04

    Historical Popularity Index (HPI)

  • 61

    Languages Editions (L)

  • 9.47

    Effective Languages (L*)

  • 3.18

    Coefficient of Variation (CV)


Among social activists, Irena Sendler ranks 27 out of 840Before her are Robert Owen, Bertha von Suttner, Thomas Müntzer, Olympe de Gouges, Charlotte Corday, and Guy Fawkes. After her are Simon bar Kokhba, Omar Mukhtar, Emily Greene Balch, Hassan al-Banna, Élie Ducommun, and Sadako Sasaki.

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Among people born in 1910, Irena Sendler ranks 7Before her are Mother Teresa, Akira Kurosawa, Jacques Cousteau, Giuseppe Meazza, Ingrid of Sweden, and Robert K. Merton. After her are Gloria Stuart, Jean Genet, Paulette Goddard, Katherine Oppenheimer, Django Reinhardt, and Konrad Zuse. Among people deceased in 2008, Irena Sendler ranks 10Before her are Yves Saint Laurent, Suharto, Paul Newman, Samuel P. Huntington, Chinghiz Aitmatov, and Albert Hofmann. After her are Charlton Heston, Arthur C. Clarke, Miriam Makeba, Mahmoud Darwish, Hua Guofeng, and Willis Lamb.

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In Poland

Among people born in Poland, Irena Sendler ranks 41 out of 1,694Before her are Andrzej Wajda (1926), Maria Goeppert Mayer (1906), Maximilian Kolbe (1894), Kurt Lewin (1890), Christian Wolff (1679), and Vladislaus II of Hungary (1456). After her are Otto Stern (1888), Bronisław Malinowski (1884), Arthur Rubinstein (1887), Casimir Funk (1884), Rudolf Clausius (1822), and Rudolf Virchow (1821).


Among social activists born in Poland, Irena Sendler ranks 2Before her are Rosa Luxemburg (1871). After her are Ferdinand Lassalle (1825), Mordechai Anielewicz (1919), Jan Karski (1914), Leopold Trepper (1904), Franciszek Gajowniczek (1901), Czesława Kwoka (1943), Ryszard Siwiec (1909), Jan Gotlib Bloch (1836), Franceska Mann (1917), and Danuta Wałęsa (1949).