
Prince Philip sacrificed a lot for his 73-year marriage to Queen Elizabeth, including his titles and citizenship of Greece and Denmark. He renounced them and became a British citizen the year they married, as well as converting from Greek Orthodoxy to Anglicanism.
He was the Queen’s most loyal supporter and close confidante, and he adapted to life as consort of one of the most famous women in the world. Even so, Philip made his feelings plain in the 1950s after his wife was persuaded to keep Windsor as the Royal Family’s name in an outburst that prompted her to make a surprising "concession".