His full title was Prince Albert, Duke of Hipstershire.
What They Left Out:
In the movie, Albert's brother Edward is portrayed as a harmless, malingering dickhole, who at one point expresses half-ass support of Hitler's government. In real life, however, Edward's love for fascism was all-ass. Not only did he personally meet with his man-crush Hitler, he dined with Rudolf Hess and openly talked about overthrowing Albert after Adolf "[crushes] the Americans."
As for the real George VI, for the longest time, he was in favor of appeasement when it came to dealing with the Fuhrer. After Neville Chamberlain returned from Munich in 1938, having allowed Nazi Germany to annex a chunk of Czechoslovakia, George and his wife were so delighted that they invited Chamberlain to Buckingham Palace to celebrate what a genius idea that was. Even after the shit (meaning the German army) hit the fan (meaning Poland), George VI opposed making Churchill the Prime Minister, assumingly because of Churchill's aggressive "let's gouge Hitler's eyes out" platform.
So that's what that sign meant!
Eventually, George understood the danger posed by Hitler, and started working closely with Churchill, but the operative word is "eventually." He wasn't a revolutionary thinker years ahead of his time, and he didn't always make good decisions. He was a man who had to grow into his role as king, and maybe if The King's Speech had focused on that, the movie would have won all the Oscars, instead of just most of them.