The writ of Quo Warranto [by what right] is created, by which all landholders exercising jurisdictions must bring their ancestors' charters before a justice in eyre for the Common Pleas for examination and interpretation as to whether they were going beyond their charters and infringing upon the jurisdiction of the Royal Court. As a result, many manor courts were confined to seigneurial matters and could no longer view frankpledge or hear criminal cases, which were reserved for the royal courts. In the manor courts which retained criminal jurisdiction, there was a reassertion of the obligation to have present a royal coroner, whose duty it was to see that royal rights were not infringed and that the goods of felons were given to the Crown and not kept by the lords.
The supreme court was Parliament. Next were the royal courts of the King's Bench, Common Pleas, and the Exchequer, which had become separate, each with its own justices and records. The Court of Common Pleas had its own Chief Justice and usually met at Westminster. This disadvantaged the small farmer, who would have to travel to Westminster to present a case. The Court of the King's Bench heard criminal cases and appeals from the Court of Common Pleas. It traveled with the King. There were many trespass cases so heard by it in the reign of Edward I. In criminal cases, witnesses acquainted with particular facts were added to the general assize of twelve men from each hundred and four men from each town.
The most common cases in the Court of Common Pleas were "detinue" [wrongful detention of a good or chattel which had been loaned, rented, or left for safe- keeping with a "bailee", but belonged to the plaintiff], "debt" [for money due from a sale, for money loaned, for rent upon a lease for years, from a surety, promised in a sealed document, or due to arbitrators to whom a dispute had been submitted] and "account" [e.g. by bailiffs of manors, the guardian in socage, and partners]. It also heard estovers of wood, profit by gathering nuts, acorns, and other fruits in wood, corody [allowance of food], yearly delivery of grain, toll, tonage, passage, keeping of parks, woods, forests, chases, warrens, gates, and other bailiwicks, and offices in fee.
The justices in eyre gradually ceased to perform administrative duties on their eyres because landed society had objected to their intrusiveness.
Breaches of the forest charter laws were determined by justices of the King's forest, parks, and chases, along with men of assize.
Coroners' inquest procedures were delineated by statute and included describing in detail in the coroner's rolls every wound of a dead body, how many may be culpable, and people claiming to have found treasure who might be suspects.
There were local courts of the vill, borough, manor, hundred, county, sheriff, escheator, and royal bailiff, with overlapping jurisdictions. The most common plea in the hundred court was trespass. It also heard issues concerning services arising out of land, detention of chattels, small debts, maiming of animals, and personal assaults and brawls not amounting to felony. Twice a year the sheriff visited each hundred in the shire to hold a tourn or court for small criminal cases. Everyone who held freehold land in the hundred except the greater magnates had to attend or be fined for absence. The sheriff annually viewed frankpledge, in which every layman without land that could be forfeited for felony, including villeins, were checked for being in a tithing, a group of neighbors responsible for each other's good conduct. This applied to every boy who had reached the age of twelve. He had to swear on the Bible "I will be a lawful man and bear loyalty to our lord the king and his heirs, and I will be justicable to my chief tithing man, so help me God and the saints." Each tithing man paid a penny to the sheriff.
In the manor courts, actions of debt, detinue, and covenant were frequent. Sometimes there are questions of a breach of warranty of title in agreements of sale of land. Accusations of defamation were frequent; this offense could not be taken to the King's court, but it had been recognized as an offense in the Anglo-Saxon laws. In some cases, the damages caused are specifically stated. For instance, defamation of a lord's grain cause other purchasers to forbear buying it. There are frequent cases of ordinary thefts, trespasses, and assaults. The courts did rough but substantial justice without distinction between concepts such as tort and contract. In fact, the action of covenant was the only form of agreement enforceable at common law. It required a writing under seal and awarded damages. Their law was not technical, but elastic, and remedies could include injunctions, salary attachment, and performance of acts.
The precedent for punishment for treason was established by the conviction of a knight, David ab Gruffydd, who had turned traitor to the Welsh enemy during the conquest of Wales and plotted to kill the King. He was condemned to be dragged at the heels of horses for being a traitor to his knightly vows, hanged by the neck for his murders, cut down before consciousness left him to have his entrails cut out for committing his crimes during the holy week of Easter, and his head cut off and his body divided into four parts for plotting against the King's life. The head and body sections were placed in public view at various locations in the nation. Prior to this the penalty was imprisonment usually followed by ransom.
Trial by battle is now limited to certain claims of enfeoffment of large land holding and is barred for land held in socage, burgage, or by marriage. Assize is the usual manner of trial, but compurgation remains in the borough court long after it becomes obsolete in the royal courts. Defendants no longer request assizes but are automatically put to them.