Louis the Pious: Did you mean...?

A 15th century CE painting depicting the death of French king Louis IX in 1270 CE during the Eighth Crusade at Tunis.

A c. 1700 portrait by Hyacinthe Rigaud of Louis XIV of France (r. 1643-1715). (Louvre Museum, Paris)

Louis-Antoine de Saint-Just (1767-1794), a leader of the Jacobin Club and of the Mountain political faction, oil on canvas portrait by Pierre-Paul Prud'hon, 1793. Only 25 when he was elected to the National Convention, Saint-Just soon became...

A 14th century CE illustration of Louis IX of France (r. 1226-1270 CE) departing Aigues Mortes for Egypt on the Seventh Crusade (1248-1254 CE).

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

A 19th century CE illustration by Gustav Doré showing the French king Louis IX (r. 1226-1270 CE) and his capture by the army of the Ayyubid Empire during the Seventh Crusade (1248-1254 CE).

Restored studio portrait of Louis Pasteur (1822-1895), photographed by Paul Nadar.

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

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.

Created in Tours, France, sometime between 1245-1248 CE, this stained glass panel depicts King Louis IX (r. 1226-1270 CE) carrying the crown of thorns. Measures 55 x 35 cm. (Metropolitan Museum of Art, New York)