ATHENS, GREECE - JANUARY 16: Haakon and Mette-Marit of Norway with Marta Luisa upon arrival at the funeral for King Constantine of Greece at the Metropolitan Cathedral of Athens, January 16, 2023, in Athens, Greece. (Photo By Raul Terrel/Europa Press via Getty Images)
ATHENS, GREECE - JANUARY 16: Crown Prince Haakon of Norway, Crown Princess Mette-Marit of Norway and Princess Martha Louise of Norway attend the funeral of Former King Constantine II of Greece on January 16, 2023 in Athens, Greece.  Constantine II, Head of the Royal House of Greece, reigned as the last King of the Hellenes from 6 March 1964 to 1 June 1973, and died in Athens at the age of 82. (Photo by Patrick van Katwijk/Getty Images)
ATHENS, GREECE - JANUARY 16: Crown Prince Pavlos of Greece and Crown Princess Mette-Marit of Norway attend the funeral of Former King Constantine II of Greece on January 16, 2023 in Athens, Greece.  Constantine II, Head of the Royal House of Greece, reigned as the last King of the Hellenes from 6 March 1964 to 1 June 1973, and died in Athens at the age of 82. (Photo by Patrick van Katwijk/Getty Images)