Louis-Charles-François Ledru

[1] He graduated from the École Polytechnique, where Gaspard Monge was one of his professors.

[2] Ledru became a member of the Académie royale d'architecture circa 1794.

[3][4] Ledru moved to the Auvergne in 1810, where he started a business in asphalt extraction.

[3] By 1820, he designed the Hôtel de Ville complex, which included the town hall, courthouse and prison, as well as the slaughterhouse, the market, etc., in Clermont-Ferrand, where he was appointed as chief architect in 1823.

[4] With Mayor Antoine Blatin, Ledru co-founded a school in Clermont-Ferrand where mathematics, architecture and drawing were taught free of charge.