He was born on 14 December 1796 or 1797 in Corsica. After finishing his studies at Nantes with the best results, he learnt law at Rennes. He was nominated to procurer of the king in 1823. following the July Revolution, he regained the magistrate at the king. He was nominated as an advocate at the office in Nantes. Lorieux returned to the magistrate in 1837.