Albert II, Prince of Monaco Prince William, Duke of Cambridge, and Catherine Middleton on 29 April 2011. The wedding took place over two days: the civil marriage ceremony took place on 1 July 2011, followed by the religious ceremony on 2 July 2011. Twins Gabriella Thérèse Marie, Countess of Carladès and Jacques Honoré Rainier, Hereditary Prince of Monaco were born to Prince Albert and Princess Charlene on 10 December 2014. On 10 December 2014, Prince Albert and Princess Charlene welcomed their first and second child, twins Gabriella Thérèse Marie and Jacques Honoré Rainier. The twins were born at Princess Grace Hospital in La Colle, Monaco.
Albert I, Prince of Monaco soon suspended by the Prince when World War I broke out. Also in 1911, Prince Albert created the Monte Carlo Rally, an automobile race designed to draw tourists to Monaco and the Casino. Despite his military service, or perhaps because of it, the Prince became a pacifist, establishing the International Institute of Peace in Monaco as a place to develop a peaceful settlement for conflict through arbitration. In the tension-filled times leading up to World War I, Prince Albert made numerous attempts to dissuade Germany's Kaiser Wilhelm II from war. When war came, Prince Albert could not avoid becoming involved.