Stefano Casiraghi

Casiraghi was killed in an offshore powerboat racing accident off the coast of Monaco near Cap Ferrat on 3 October 1990 while defending his world offshore title. He was 30 years old and had planned to retire after the race. Only weeks earlier, he had escaped death when his boat blew up off the coast of Guernsey.

A throttle man, a role that requires control of the trim tab while observing water conditions to reach optimum speed, Casiraghi participated in eighty offshore races during his lifetime. Over a 20-year career, he won a dozen of those competitions and, at the time of his death, was the world champion of offshore speedboat racing, including the World Championship held off the coast of Atlantic City in 1989. Casiraghi had set the record (since broken) for 277 km/h on Lake Como in 1984. It is a very dangerous sport, but as Casiraghi once said, "There are more dangerous sports and I believe one should live life to the fullest."

He was involved in the real estate and retail export enterprises of the family business that his father had built up. His obituary in The New York Times described him as a financier and said, at his death, Casiraghi was Chairman of "Cogefar France" (a construction subsidiary of Fiat). The same source said he had a majority interest in Engeco, a Monaco-based construction company which he founded in 1984. At the time of his first child's birth, it was said that he was the director of the Christian Dior boutique in Monte Carlo.

The couple had three children: Andrea (born 8 June 1984), Charlotte (born 3 August 1986), and Pierre (born 5 September 1987). The children are, respectively, fourth, eighth and eleventh in the line of succession to the Monegasque throne, after their twin cousins and their mother. Despite their parents' not having married in the Church as required for legitimacy under church (but not Monagasque) law, they were legitimised by Pope John Paul II in February 1993, eight months after their mother's marriage to Junot was annulled in June 1992.

On 29 December 1983 in Monaco, he and Princess Caroline married in a civil ceremony in the Hall of Mirrors of the Monegasque Princely Palace. They were not able to have a Catholic ceremony because Caroline had been divorced from Philippe Junot, and an annulment had not yet been obtained. However, as Caroline was over three months pregnant, the couple did not want to wait any longer.

Stefano Casiraghi (8 September 1960 – 3 October 1990) was an Italian speedboat racer, socialite, and businessman. He was the son of Giancarlo Casiraghi and Fernanda Biffi, and became the second husband of Princess Caroline of Monaco. He was famous for having set a speed record in speedboat racing and was, at the time of his death in a racing accident, the world champion of offshore powerboat racing.

The son of Giancarlo Casiraghi (1925-1998), a businessman and Fernanda (née Biffi), Stefano Casiraghi grew up in the Casiraghi family's estate, Villa Cigogne, in Fino Mornasco. He had two brothers, Marco and Daniele (died in 2016), and one sister, Rosalba. He also developed an early passion for the speedboat races on Lake Como. He followed the course of his brothers by enrolling at Milan's Bocconi University. However, his eagerness to work in business was stronger than his wish to have a degree, or his skills to obtain one, and he left the university after only two years of study, to begin to work for his father and his oldest brother, Marco.