Today, in a remarkable milestone, HM Queen Elizabeth II (r 6 Feb 1952 - ) becomes the longest reigning monarch in British history, breaking the record of her great-great-grandmother Queen Victoria (r 20 Jun 1837 - 22 Jan 1901). Congratulations to Her Majesty on her many years of tireless service to Britain and the Commonwealth! God Save the Queen.
Here is my updated list of Europe's longest reigning monarchs. It has not been
as often noted today that Queen Elizabeth II is now not only the longest
reigning monarch in British history, but the third longest reigning
monarch of ANY kingdom or empire in European history; only King Louis
XIV of France (72: 1643-1715) and Emperor Franz Joseph I of
Austria-Hungary (68: 1848-1916) still outrank her. If smaller states are
included, the picture might get a little more complicated, but to my
knowledge only Johann II of Liechtenstein (71: 1858-1929) would need to
be added; the Queen has already bested Elector/King Friedrich August III
(I) of Saxony (1763-1827).