Popsugar Celebrity The Royals Prince Charles Facts 70 Things You Never Knew About Prince Charles 8 November 2018 by Corinne Sullivan View On One Page Photo 2 of 10 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 2 3: Number of siblings — Princess Anne, Prince Andrew, and Prince Edward. 3: Number of instruments played — cello, trumpet, and piano. 3: Number of grandchildren — Prince George, Princess Charlotte, and Prince Louis. 4: Position most often played in polo, though he has played all four positions. 4: Number of languages spoken — English, French, German, and Welsh. 5: Years of active duty in the Royal Air Force, British Army, and Royal Navy. > 5: Age during his first official visit abroad to Malta. Previous Next Start Slideshow The RoyalsThe British RoyalsCelebrity FactsKing Charles III