Children playing at the Berlin Wall, 1963. (Thomas Hoepker/Magnum Photos)
King Edward VIII of the United Kingdom reigned for slightly less than a year, between January and December of 1936, before abdicating to marry the American Wallis Simpson. He was created the Duke of Windsor by his brother, George VI, after the abdication.
As Duke of Windsor, he served as Royal Governor of the Bahamas during the Second World War, but after private accusations of holding sympathies to the German Third Reich, he retired to France, where he and Wallis, Duchess of Windsor, lived the remainder of their lives.
The borders of the Principality of Liechtenstein (de: Fürstentum Liechtenstein) have remained unchanged since their establishment in 1434, when the Rhine was used to denote the boundary between the Principality and the cantons of Switzerland.
King Harold Bluetooth Gormsson (non: Haraldr blatonn Gormsson, da: Harald Blåtand Gormsen) was born around 935 and died in 986. He reigned over Denmark from 958 until his death, and was King of Nrway for a time during the 970s.
Harold Bluetooth became the first Scandinavian king to convert to Christianity, probably in the 960s. He attempted to spread Christianity throughout Norway and Denmark, though met little success.