June 11 » The boundaries of the Colony of New Zealand are extended by the UK to include the Cook Islands.
July 4 » William Howard Taft becomes American governor of the Philippines.
August 5 » Peter O'Connor sets the first IAAF recognised long jump world record of 24ft 11.75in (7.6137m), a record that would stand for 20 years.
August 6 » Kiowa land in Oklahoma is opened for white settlement, effectively dissolving the contiguous reservation.
August 28 » Silliman University is founded in the Philippines. It is the first American private school in the country.
October 29 » Leon Czolgosz, the assassin of U.S. President William McKinley, is executed by electrocution.
Day of marriage December 10, 1926
The temperature on December 10, 1926 was between 6.1 °C and 8.6 °C and averaged 7.3 °C. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west. Source: KNMI
May 9 » Admiral Richard E. Byrd and Floyd Bennett claim to have flown over the North Pole (later discovery of Byrd's diary appears to cast some doubt on the claim.)
May 18 » Evangelist Aimee Semple McPherson disappears in Venice, California.
June 23 » The College Board administers the first SAT exam.
June 28 » Mercedes-Benz is formed by Gottlieb Daimler and Karl Benz merging their two companies.
September 25 » The international Convention to Suppress the Slave Trade and Slavery is first signed.
October 31 » Last issue of the independent Italian newspaper Il Mondo, thereafter suppressed by the Mussolini regime
Day of death May 15, 1961
The temperature on May 15, 1961 was between 2.8 °C and 14.1 °C and averaged 9.8 °C. There was 3.7 hours of sunshine (24%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the north-northeast. Source: KNMI
February 4 » The Angolan War of Independence and the greater Portuguese Colonial War begin.
April 12 » Cold War: Space Race: The Soviet cosmonaut Yuri Gagarin becomes the first human to travel into outer space and perform the first manned orbital flight, Vostok 1.
May 4 » American civil rights movement: The "Freedom Riders" begin a bus trip through the South.
June 23 » The Antarctic Treaty System, which sets aside Antarctica as a scientific preserve and limits military activity on the continent, its islands and ice shelves, comes into force.
August 25 » President Jânio Quadros of Brazil resigns after just seven months in power, initiating a political crisis that culminates in a military coup in 1964.
November 11 » Thirteen Italian Air Force servicemen, deployed to the Congo as a part of the UN peacekeeping force, are massacred by a mob in Kindu.
When copying data from this family tree, please include a reference to the origin: Tijs van den Brink, "Jan Borren", database, Genealogy Online (https://www.genealogieonline.nl/jan-borren/I40334.php : accessed February 17, 2026), "Willem Jansen (1901-1961)".
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