Common law and King's Bench, were written in Latin. The rolls were made up in bundles by law term: Hilary, Easter, Trinity, and Michaelmas, or winter, spring, summer, and autumn. They are currently deposited in the UK National Archives, by whose permission images of the rolls for the Courts of Common Pleas, King's Bench, and Exchequer of Pleas, from the 13th century to the 17th, can be viewed online at the Anglo-American Legal Tradition site (The O'Quinn Law Library of the University of Houston Law Center). The doctrine of precedent developed during the 12th and 13th centuries, as the collective judicial decisions
Welsh toponymy of England. Many English county towns, founded as Roman "castra" and now having the English suffix "-c(h)ester", also have Welsh names, in most cases using the prefix "Caer-". Examples include "Caer" or "Caerlleon" (for Chester), "Caerloyw" (Gloucester), "Caerwrangon" (Worcester), "Caergrawnt" (Cambridge, from Grantchester), and "Caerwynt" (Winchester). In some other cases, Welsh names are translations of the English name, often influenced by the Welsh poetic tradition – for example, "Rhydychen" (literally, "oxen ford") for Oxford, and "Gwlad-yr-haf" ("land of summer") for Somerset. There are some erroneous "translations" such as "Rhydwely" for Bedford, which is actually derived from an English personal name