Wedding of King Constantine II and queen Anne Marie September 18, 1964 in Athens. From left in row above bridal maids: King Frederik IX of Denmark, Queen Ingrid of Denmark, Queen Anne Marie of Greece, King Constantine of Greece, Queen Frederica of Greece and King Gustav VI of Sweden. Back row left: Crown-princess Margrethe of Denmark. Ritzau Scanpix 2023/Vagn Hansen via REUTERS