Marc-Antoine Charpentier was a French composer of the Baroque era. Exceptionally prolific and versatile, Charpentier produced compositions of the highest quality in several genres. His mastery in writing sacred vocal music, above all, was recognized and hailed by his contemporaries. Any family relationship between him and Gustave Charpentier, the late-nineteenth and early-twentieth century French opera composer, is highly unlikely.

https://en.wikipedia.org/wiki/Marc-Antoine_Charpentier