 He was born in Neuilly-sur-Seine, Île-de-France, France.He is a maternal second cousin of Charles, Prince of Wales through their shared great-grandparents, King George I and Queen Olga of Greece, born a Grand Duchess of Russia.Carlo Alessandro married Veronique Lantz, daughter of Gérard Lantz and his wife, Monique Rachet, on 10 February 1976 in Saint-Tropez, Provence-Alpes-Côte d'Azur, France.