Chastan is a French surname with origins in the Occitan region. The name likely originated from the Old French word "chasten," meaning "to chasten" or "to correct." Over time, the name has evolved to become a common surname in France and other French-speaking countries. Chastan is important because it reflects a linguistic heritage linked to Old French, specifically the term for 'chestnut,' rather than a direct cultural heritage of the Occitan people.
