The Hundred Thousand Sons of Saint Louis was the popular name for a French army mobilized in 1823 by the Bourbon King of France, Louis XVIII to help the Spanish Royalists restore King Ferdinand VII of Spain to the absolute power of which he had been deprived during the Liberal Triennium. Despite the name, the actual number of troops was around 60,000. The force comprised some five army corps (the bulk of the French regular army) and was led by Duke of Angoulême, the son of the future King Charles X of France.