According to an article in 17th April 2021 edition of KP.UA news, Prince Philip, Duke of Edinburgh (1921-2021) was forbidden to talk about Nicholas II during his visit to Kiev in September 1973.
At Buckingham Palace, they wanted Philip’s visit to be limited to an exclusively sports program. For the Kremlin, special instructions for the upcoming royal visit, specified that a number of topics sensitive to the Soviets were clearly off the table. The main prohibition was talking about the fate of Nicholas II and his family — a topic for which Philip was especially sensitive to.
In 1957, he had stated, “I would like to go to Russia very much—although the bastards murdered half my family.”
Prince Philip was born on 10th June 10, 1921 in Greece. He is related to the House of Romanov through both of his parents. He was a direct descendant of Emperor Nicholas I via his paternal grandmother Grand Duchess Olga Constantinovna. His maternal grandmother, Princess Victoria of Hesse and by Rhine, was a sister of Empress Alexandra Feodorovna (Alix of Hesse), and a second cousin of Emperor Nicholas II.