On May 7, 1832 Great Britain, France and Russia established an independent Greece and installed Price Fredrik Otto of Bavaria, second son of Ludwig I, King of Bavaria.
After a decade of warfare punctuated by a popular uprising against Mahmud II in Constantinople, the "Great Powers" wanted an independent Greek state after the defeat of the Ottoman Empire. At the wise old age of 17, Otto was selected to lead the new state.
His father, Ludwig I, had always respected Greek culture - it was Ludwig who changed the spelling of "Baiern" to "Bayern" with the greek "y" instead of "i" and built the classical buildings at Königsplatz in Munich.
Although Otto ultimately failed and was removed as King of Greece, his memory lives on in the Greek Flag - White & Blue!
There is a wonderful article by Robert A. Selig in the June/July 2011 issue of German Life if you care to read more about the historical curiosity. Or you can read the Wikipedia article for a little more background.