Christian and Luise were busy in the years after their marriage, popping out children, whom they married off very strategically. Their eldest child was a son who became Frederik VIII of Denmark after his father’s death. He in turn had four sons, the eldest of whom became in turn Christian X of Denmark, while the second was chosen to become King of the re-established Norwegian monarchy in 1905 as Haakon VII.
The eldest daughter married the Prince of Wales, later Edward VII of the U.K., and became the mother of King George V. Another child, Maud, married her cousin Haakon VII, and is the Queen Maud for whom the Antarctic area is named. Her son Olav V and grandson Harald became Kings of Norway in turn after her husband.
Son #2, Prince Christian William Ferdinand, was chosen, after Otto didn’t work out, to become George I of Greece. We’ll get back to him in a moment.
Daughter #2. Princess Dagmar, married Tsar Alexander III, adopting the style Maria Fyodorovna as Tsarina, and in due time became the mother of Nicholas II.
Daughter #3, Princess Thyra, married the heir to the Kingdom of Hannover, who was next in line for the Duchy of Brunswick as well. Bismarck, however, dethroned her father-in-law at the same time he took Schleswig-Hostelin from Denmark. (The Danes recovered Danish-speaking northern Slesvik in 1918; the rest of Schleswig and all of Holstein, incorporated into Prussia, became a Land of (West) Germany after World War II.
Prince Valdemar, the youngest son, married the daughter of the pretender to the French throne, and ended up in a naval career. He is notable for looking just like George V and Nicholas II.
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But, getting back to George I of Greece, he reigned for 50 years (1863-1913) before being assassinated. The Greeks alternated enthroning and dethroning his descendants for half the 20th centuiry, ending up in an ostensible republic in 1967. His fourth son, however, was Prince Andrew,
Andrew’s marriage was unstable. He was a typical somewhat dissolute cadet member of an exiled royal family, his wife, Alice of Battenberg, was a devout woman who felt a calling to a religious order. They had one son, and then separated.
That son, however, became Prince Philip of Greece and Denmark. Raised in England, he renounced his royal titles to join the British Navy, and adopted the Anglicization of his mother’s surname that her male relatives had already used from 1917 on, when he did, becoming Lt. Philip Mountbatten. And as fate would have it, he caught the eye of his cousin King George VI’s elder daughter Princess Elizabeth.
And when that venderable lady breathes her last, the Queen of Canada, Australia, New Zealand, the Bahamas, St. Vincent and the Grenadines, about a dozen other realms, and of course the United Kingdom of Gr4eat Britain and Northern Ireland, will be their son Prince Charles, in unbroken male descent from old Friedrich Wilhelm of Glucksburg.