Known from her birth as Mademoiselle d'Artois, Louise did not have the chance to get to know her father. She was only five months old when the Duke of Berry was assassinated while leaving the old opera of Paris by Louis Pierre Louvel, a Bonapartist whose goal was the "extinction of the house of Bourbon". Louise was then the only child of the main branch of the royal dynasty of Bourbon descendants of Louis XV. The lack of male heirs raised the prospect of the throne passing to the Duke of Orléans and his heirs, which horrified the more conservative ultras. Parliament debated the abolition of the Salic law, which excluded females from the succession and was long held inviolable. However, the widowed Duchess of Berry was found to be pregnant and on 29 September 1820 gave birth to a son, Louise's only sibling, the miracle boy Henri d'Artois (1820-1883). He received then the title of Duke of Bordeaux.