Much is known of the British Royal Family.
But in Monaco, a tiny microstate on the French Riviera known for its Grand Prix and huge wealth, lives a less renowned but equally interesting royal family.
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Currently headed by Prince Albert II, the son of Prince Rainier III and Princess Grace Kelly, the Monaco royal family is one of the richest in the world. Albert has a net worth estimated at $1 billion.
He is married to Princess Charlene of Monaco in what these days looks like a picture-perfect marriage, with two children.
But getting to this point has been an interesting ride, with illegitimate children, family rifts and - almost - a runaway bride.
Princess Charlene was born in Rhodesia (modern-day Zimbabwe), before moving to South Africa at 11 years old.
With a former competitive diver and swimming coach as her mother, Charlene soon also excelled in the pool.
She represented South Africa at the 1998 and 2002 Commonwealth Games, winning a silver medal in the 4x100 metre medley relay in the latter competition.