How are the Windsors and the Romanovs actually connected?
The sixth episode of season five opens in World War I–era Britain, when King George V (Richard Dillane) receives a letter from the British prime minister suggesting that the government was willing to send a ship to Russia to save their Russian relatives, the Romanovs, who had recently been overthrown in the Russian Revolution.
Later, an imprisoned Tsar Nicholas II (a.k.a. Nikolai II Alexandrovich Romanov) is awoken by a soldier…