January 6 » Second Boer War: Having already besieged the fortress at Ladysmith, Boer forces attack it, but are driven back by British defenders.
January 16 » The United States Senate accepts the Anglo-German treaty of 1899 in which the United Kingdom renounces its claims to the Samoan islands.
February 18 » Second Boer War: Imperial forces suffer their worst single-day loss of life on Bloody Sunday, the first day of the Battle of Paardeberg.
May 18 » The United Kingdom proclaims a protectorate over Tonga.
May 26 » Thousand Days' War: The Colombian Conservative Party turns the tide of war in their favor with victory against the Colombian Liberal Party in the Battle of Palonegro.
September 8 » Galveston hurricane: A powerful hurricane hits Galveston, Texas killing about 8,000 people.
Day of death May 20, 1913
The temperature on May 20, 1913 was between 1.6 °C and 15.5 °C and averaged 10.5 °C. There was 7.0 hours of sunshine (44%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
In The Netherlands , there was from February 12, 1908 to August 29, 1913 the cabinet Heemskerk, with Mr. Th. Heemskerk (AR) as prime minister.
In The Netherlands , there was from August 29, 1913 to September 9, 1918 the cabinet Cort van der Linden, with Mr. P.W.A. Cort van der Linden (liberaal) as prime minister.
January 3 » An Atlantic coast storm sets the lowest confirmed barometric pressure reading for a non-tropical system in the continental United States.
February 20 » King O'Malley drives in the first survey peg to mark commencement of work on the construction of Canberra.
March 3 » Thousands of women march in the Woman Suffrage Procession in Washington, D.C.
March 31 » The Vienna Concert Society rioted during a performance of modernist music by Arnold Schoenberg, Alban Berg, Alexander von Zemlinsky, and Anton von Webern, causing a premature end to the concert due to violence; this concert became known as the Skandalkonzert.
July 4 » President Woodrow Wilson addresses American Civil War veterans at the Great Reunion of 1913.
August 28 » Queen Wilhelmina opens the Peace Palace in The Hague.
When copying data from this family tree, please include a reference to the origin: Michas Bertou, "Family tree Bertou", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-bertou/I424.php : accessed January 4, 2026), "Theodorus Bertou (1900-1913)".
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