January 31 » Czechoslav Trade Union Association is founded in Prague.
June 22 » British colonial officers Charles Walter Rand and Lt. Charles Egerton Ayerst are assassinated in Pune, Maharashtra, India by the Chapekar brothers and Mahadeo Vinayak Ranade, who are later caught and hanged.
July 11 » Salomon August Andrée leaves Spitsbergen to attempt to reach the North Pole by balloon. He later crashes and dies.
August 31 » Thomas Edison patents the Kinetoscope, the first movie projector.
September 12 » Tirah Campaign: In the Battle of Saragarhi, ten thousand Pashtun tribesmen suffer several hundred casualties while attacking 21 Sikh soldiers in British service.
November 1 » The first Library of Congress building opens its doors to the public; the library had previously been housed in the Congressional Reading Room in the U.S. Capitol.
Day of death December 25, 1911
The temperature on December 25, 1911 was between 3.4 °C and 7.9 °C and averaged 5.7 °C. There was 4.1 mm of rain. There was 0.5 hours of sunshine (6%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
April 8 » Dutch physicist Heike Kamerlingh Onnes discovers superconductivity.
May 31 » The RMS Titanic is launched in Belfast, Northern Ireland.
June 16 » IBM founded as the Computing-Tabulating-Recording Company in Endicott, New York.
August 29 » The Canadian Naval Service becomes the Royal Canadian Navy.
November 17 » Omega Psi Phi fraternity was founded on the campus of Howard University in Washington, D.C.
December 14 » Roald Amundsen's team, comprising himself, Olav Bjaaland, Helmer Hanssen, Sverre Hassel, and Oscar Wisting, becomes the first to reach the South Pole.
When copying data from this family tree, please include a reference to the origin: J Eijsermans, "Eijsermans family tree", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-eijsermans/I321909.php : accessed January 6, 2026), "Johannes Willemen (1897-1911)".
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