King Leopold I

Leopold served in the Russian army during the Napoleonic Wars. Napoleon himself reportedly called him “the most handsome man he had ever seen.”
In 1816, he made a brilliant match by marrying Princess Charlotte Augusta (1796–1817), who was in line for the British throne. Their marriage was a very happy one, but ended in tragedy when Charlotte died in childbirth just a year later.
In 1830, Leopold turned down the Greek crown, but later that same year, the newly formed Belgian National Congress offered him the throne — and he accepted.
As King of the Belgians, Leopold played a key role in uniting the country, especially in balancing the interests of the Flemish and Walloon populations.
He also loved matchmaking among his royal relatives, including arranging the marriage of Queen Victoria and Prince Albert in 1840. That’s why he’s often called the “Uncle of Europe.