Why were royal writs required in cases involving title to land?

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King Henry II and St. Thomas Becket — Common law Henry II (left) disputing with Thomas Becket (center), miniature from a 14th-century manuscript; in the British Library (Cotton MS. Claudius D.ii).

In the context of the development of the common law, royal writs were required for all actions concerning title to land because the court machinery for civil cases was built entirely around the writ system.1

These writs served as formal written orders issued in the king's name from the chancery. By mandating the use of these specific instruments, the royal courts were able to centralize judicial authority, ensuring that land disputes were brought under the jurisdiction of the king's courts rather than being settled solely by local customs. Because each writ was tied to a specific form of action, a litigant had to select the correct writ to initiate a legal claim, which allowed the royal judiciary to maintain consistency and control over the application of the law across the realm.1