The importance of the Angevin period to the development of a characteristically English common law is widely recognized. Less well known, but also of considerable significance, was the Anglo-Norman contribution to the ius commune, the Roman and canon law studied and practised in Europe during this period. However, the question of influence from the ius commune to English common law remains very problematic. One method of tackling the issue is to take a single legally important text and investigate the possibility of ius commune influence upon it, or indeed the possibility of the continuing effect of some earlier influence of canon law upon English law. An obvious text for such examination is Magna Carta: how far was the legal background to the great charter purely English, how far was it that of broader developments in European learned law?

¶ State of the issue

The maximalist position concerning the influence of ius commune is best made by Professor Helmholz, in his article ‘Magna Carta and the ius commune’, published in the University of Chicago Law Review in 1999. The article makes the argument that the ius commune, the amalgam of the Roman and canon laws that governed legal education in European universities and influenced legal practice in Europe from the twelfth century forward, played a role in the drafting of a significant number of the Charter's provisions.

The contrary view is best presented in J. C. Holt's magisterial book, Magna Carta, first published in 1965 and reissued in 1992 with a substantial new chapter on ‘Justice and Jurisdiction’. Holt states that