Some great events marked Hugo's early childhood. A few years before his birth, the Bourbon Dynasty was overthrown during the French Revolution. The First Republic rose and fell and the First French Empire rose under the rule of Napoléon Bonaparte. Napoléon became Emperor two years after Hugo's birth. The Bourbon Monarchy was restored when Hugo was 17. His parents had different political and religious views. Hugo's father was an officer. He ranked very high in Napoléon's army. He was an atheist republican and considered Napoléon a hero. His mother was an extreme Catholic Royalist. As Hugo's father was an officer, the family moved frequently. Victor Hugo learned a lot from these travels. He stayed in Naples and Rome for six months, before going back to Paris. He was only five at the time, but he remembered the trip well.