What role did the Parlement play during the reign of Louis IX?

During the reign of Louis IX (1226–1270), the institution known as the Parlement emerged from the Curia Regis (King’s Court) as judicial activities became increasingly specialized and distinct from other political or feudal business.12

By approximately 1250, these judicial sessions were formally described as curia regis in parlemento (or Parlement). Louis IX played a central role in this development by establishing the court in a dedicated space known as the Chambre aux Plaids (pleading chamber) on the site of the modern Palais de Justice in Paris.1

The Parlement served several critical functions under Louis IX:
* Appellate Jurisdiction: It began hearing appeals against the judgments made by baillis (royal administrative representatives in the provinces) and decided cases involving royal towns.1
* Strengthening Royal Authority: The court’s arrêts (final decisions) expressed the king’s law with incontestable authority, which served to consolidate and expand royal power.1
* Centralized Record-Keeping: Toward 1250, the judgments of the curia began to be recorded centrally, reflecting the growing volume and technicality of the court's work.2