Legal English the history of the development of English as a legal language. In prehistoric Britain, traditional common law was discussed in the vernacular (see Celtic law). The legal language and legal tradition changed with waves of conquerors over the following centuries. Roman Britain (after the conquest beginning in AD 43) followed Roman legal tradition, and its legal language was Latin. Following the Roman departure from Britain circa 410 and the Anglo-Saxon invasion of Britain, the dominant tradition was instead Anglo-Saxon law, which was discussed in the Germanic vernacular (Anglo-Saxon, Old English), and written in Old English since circa 600, beginning with
Anglo-Norman language has been spelled as "s'uvisera" and "s'advisera", and "Reyne" as "Raine". Among important writers of the Anglo-Norman cultural commonwealth is Marie de France. Much of the earliest recorded French is in fact Anglo-Norman French. In Northern France, almost nothing was at that time being recorded in the vernacular because Latin was the language of the Church and consequently of education and historiography, and was thus used for the purpose of records. Latin also remained in use in medieval England by the Church, the royal government and much local administration, as it had been before 1066, in parallel with Middle English.