Louis IX: Did you mean...?

Bust of Louis Antoine de Saint-Just by French sculptor David d'Angers, 1848. David d'Angers Gallery, Angers, France. Photo credits to Wikipedia user Selbymay, 2011.

Louis XIII of France (1601-1643), oil on canvas portrait by Philippe de Champaigne, 1635. Museo del Prado, Madrid.

Battle of Poltava 1709, oil on canvas by Louis Caravaque. A painting depicting the decisive Russian victory at Poltava in 1709.

17th-century portrait of Louis the Pious, Holy Roman Emperor and King of the Franks (r. 814-840), by an unknown creator, c. 1610-1640. The British Museum, London.

Louis Philippe II, Duke of Orléans, also known as Philippe Égalité (1747-1793), oil on canvas portrait by Antoine-François Callet, c. late 18th century. Palace of Versailles.

Portrait of Louis Philippe II, Duke of Orléans (1747-1793) with the insignia of the Grand Orient of France. Oil on canvas portrait by Michel Garnier, 1781. Condé Museum, Chantilly.

9th-century silver coin depicting Louis the Pious, Holy Roman Emperor and King of the Franks (r. 814-840). The British Museum, London.

Louis XIII Crowned by Victory, oil on canvas by Philippe de Champaigne, 1635. Louvre, Paris.

The compound monocular microscope of Louis Pasteur (1822-1895). Made by Nachet et fils, 1861-70. (Science Museum, London)

A photo showing Castle of Saint Louis, a ruined crusader castle located in Sidon, Lebanon. Built by the French crusaders in 1254 CE.