Justice of the Common Pleas was a puisne judicial position within the Court of Common Pleas of England and Wales, under the Chief Justice. The Common Pleas was the primary court of common law within England and Wales, dealing with "common" pleas (civil matters between subject and subject). It was created out of the common law jurisdiction of the Exchequer of Pleas, with splits forming during the 1190s and the division becoming formal by the beginning of the 13th century. The court became a key part of the Westminster courts, along with the Exchequer of Pleas (qualified to hear cases involving revenue owed to the King) and the Court of King's Bench (authorised to hear cases involving the King), but with the Writ of Quominus and the Statute of Westminster, both tried to extend their jurisdic