Prince Alexandre of Belgium (French: Alexandre Emmanuel Henri Albert Marie Léopold, Dutch: Alexander Emanuel Hendrik Albert Maria Leopold; 18 July 1942 – 29 November 2009) was the fourth child of King Leopold III of Belgium, and the eldest for his second wife Lilian, Princess of Réthy.

[1][2] Unverified sources have claimed that, in September 1971, Prince Alexandre was responsible for a car accident that resulted in the death of a Belgian priest named l'abbé Froidure.

Eventually, however, Alexandre and the dynastic descendants of the first marriage seemed to have made their peace, and the prince and his wife joined the rest of the Royal Family in public appearances.

Although it has been assumed that the children of King Léopold's second marriage were barred from the Belgian throne, some constitutional scholars maintain that there was no legal ground for Alexandre's exclusion.

[6] Even if that is the case, Alexandre's secret marriage in 1991 contravened Article 85 of the Belgian constitution, which deprived of the right of succession to the Throne any descendant of King Leopold I who marries without the Sovereign's permission.

[7] Nonetheless, in a May 2008 interview with Point de a little over a year before Alexandre's death, his wife noted, "...the children of the second marriage of King Leopold -- Prince Alexandre, the Princesses Maria Esmeralda and Marie-Christine -- have been raised in a certain manner: Prince and Princesses of Belgium, accorded the style of Royal Highness, yet excluded from the succession to the throne.