M. de Champeaux

A search for a prominent art critic or author specifically known as “M. de Champeaux” did not yield a definitive individual who fits this description within the context of significant contributions to art history or art criticism. Several individuals with “Champeaux” in their name appeared in the search results, but their primary professional fields were outside of art criticism.

Guillaume de Champeaux (c. 1070–1121) was a French philosopher and theologian of the medieval period, primarily known for his work in scholastic philosophy and his role as a teacher in Paris. François de Champeaux (1903–1980) was a French politician and journalist, with no clear record as an art critic. Alfred de Champeaux is listed as an author of a work on furniture history, “Le meuble. I. Antiquité, Moyen Age et renaissance (Éd.1885)”, suggesting a specialized focus rather than broad art criticism. Similarly, Denis de Champeaux is identified as an author, but without further details linking them to art criticism or significant publications in the field. Finally, Henry Corbin (1903–1978) was a distinguished French philosopher and orientalist, renowned for his studies in Islamic philosophy and mysticism.

Therefore, based on the available information, a concise professional biography for an art critic or author explicitly identified as “M. de Champeaux” and significant in art history or art criticism cannot be provided.