August 6 » Kiowa land in Oklahoma is opened for white settlement, effectively dissolving the contiguous reservation.
August 14 » The first claimed powered flight, by Gustave Whitehead in his Number 21.
August 28 » Silliman University is founded in the Philippines. It is the first American private school in the country.
September 7 » The Boxer Rebellion in Qing dynasty (modern-day China) officially ends with the signing of the Boxer Protocol.
October 12 » President Theodore Roosevelt officially renames the "Executive Mansion" to the White House.
November 27 » The U.S. Army War College is established.
Day of marriage May 4, 1927
The temperature on May 4, 1927 was between 8.7 °C and 24.4 °C and averaged 17.2 °C. There was 10.7 hours of sunshine (71%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east-southeast. Source: KNMI
February 23 » German theoretical physicist Werner Heisenberg writes a letter to fellow physicist Wolfgang Pauli, in which he describes his uncertainty principle for the first time.
March 24 » Nanking Incident: Foreign warships bombard Nanjing, China, in defense of the foreign citizens within the city.
April 12 » Rocksprings, Texas was hit by an F5 tornado that destroyed 235 of the 247 buildings in the town and killed 72 townspeople and injured 205; third deadliest tornado in Texas history.
June 26 » The Cyclone roller coaster opens on Coney Island.
October 6 » Opening of The Jazz Singer, the first prominent "talkie" movie.
December 27 » Kern and Hammerstein's musical play Show Boat, considered to be the first true American musical play, opens at the Ziegfeld Theatre on Broadway.
When copying data from this family tree, please include a reference to the origin: Hans Pruckmuller, "Family tree Van Willigen", database, Genealogy Online (https://www.genealogieonline.nl/van-willigen-stamboom/I16234.php : accessed March 6, 2026), "Hendrik Wouter van Willigen (1901-)".
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