From Wikipedia.com Part
Louis Ducruet
Louis Robert Paul Ducruet was born in Monaco on 26 November 1992, the son of Princess Stéphanie of Monaco and Daniel Ducruet, a former Palace bodyguard.
His parents were subsequently married in a civil ceremony on July 1, 1995.
He has a sister Pauline born 1994, a half-brother
Michaël from a relationship his father previously had with Martine Malbouvier, and a half-sister Camille as a result of his mother's relationship with Jean Raymond Gottlieb.
In 2005 he participates together with his sister and father to the French reality TV show La Ferme Célébrités.
Although he holds no title, he is a grandson of Prince Rainier III and is currently 7th in the line of succession to the Monegasque Throne.
Louis is a huge fan of soccer, he supports his hometeam AS Monaco FC with great enthusiasm. He speaks French and English fluently. He also knows Monaco's local dialect the ' langue monegasque' as well as a little german and italian.
Source: Wikipedia