This book, published in 1728, is the first volume in a series of comprehensive legal commentaries on the customs of Paris, which were the principles and laws governing the area of the Prévôté and Vicomté during the Ancien Régime. This seminal work aimed to elucidate and interpret the customary law of Paris, which was a significant part of the legal framework in pre-revolutionary France, especially given that Parisian custom often served as a model for other regions. Tome I would typically cover the first set of these customs, providing detailed annotations and explanations. It was intended for legal professionals, scholars, and magistrates and would include historical context, application of the laws, and jurisprudence. As customs varied significantly across France, the "Nouveau Commentaire" would have been an essential reference for understanding the specific legal practices and nuances of the Parisian region at that time.