Of all the surviving legacies of early medieval Celtic civilization, none is more impressive, more detailed, or more useful to the modern historian than the body of customary law preserved in the Irish, Welsh, and Breton legal manuscripts. The Celtic legal tradition, best known through the Brehon law of medieval Ireland but also documented in the Welsh Cyfraith Hywel and the Breton Très Ancienne Coutume, represents one of the most sophisticated bodies of indigenous European law to survive from the early medieval period, and it offers an unparalleled picture of how the Celtic peoples regulated the most important relationships of their social, economic, and political life. These laws were the working legal system of the Celtic tribal polities and they governed the legal position of Celtic women as well as men, defining property, contract, marriage, inheritance, and the liability for wrongdoing in minute and often subtle detail.
This page is part of the broader survey of Celtic society, law, and governance and examines the sources of Celtic law, the structure of the Brehon law tradition, the major substantive areas of Celtic law, the Welsh legal tradition, and the relationship between Celtic law and the broader European legal inheritance.
The Sources of Celtic Law
The earliest written Celtic law texts are the Irish law manuscripts of the seventh and eighth centuries CE, although the material they contain is generally much older, and the tradition continued to be copied and commented on in manuscript form until the seventeenth century. The most important of the early Irish law texts is the Senchas Már, the “Great Tradition,” a collection of legal texts attributed to a legendary commission of nine scholars appointed by the king of Ireland in the fifth century. The Senchas Már covers the whole field of Irish law, from the law of distress and contract to the law of marriage, inheritance, and procedure.
Other major Irish law texts include the Bretha Crólige or “sick-maintenance judgments,” which set out the obligations of a person who has injured another to maintain the injured party during recovery, the Críth Gablach or “branched law,” which describes the grades of society and their rights, and the Uraicecht Becc or “small primer,” which classifies the ranks of society. The later commentaries on these texts added layer after layer of explanation, case law, and practical guidance, and the resulting body of legal literature impressive achievements of the early medieval Irish world.
The Welsh legal tradition is preserved in a series of manuscripts of the thirteenth and fourteenth centuries, the most important of which is the Peniarth Manuscript 28, a copy of the Cyfraith Hywel or “Law of Hywel Dda,” traditionally attributed to the tenth-century king Hywel Dda. The Welsh law texts cover much the same ground as the Irish law, with sections on the king, the nobles, the church, the townsman, the law of property, the law of contract, the law of marriage and inheritance, and the law of tort.
The Breton legal tradition is preserved in the Très Ancienne Coutume de Bretagne, a body of customary law recorded in manuscripts of the thirteenth and fourteenth centuries. The Breton law shows the influence of both the older Celtic inheritance and the French and Norman legal traditions.
The Brehon and the Administration of Law
The Brehon law of medieval Ireland was administered by a class of professional jurists known as brithem (plural brithemain), the origin of the English term Brehon. The brithem was a learned specialist who had undergone a long training in the law, who was familiar with the texts and the case law, and who was capable of delivering judgments on the most difficult cases. The brithem was usually a member of the flaith or aristocratic class.
The brithem did not work alone. In the more important cases, he would sit with a group of fellow brithemain who would assist in the deliberation and who would lend the authority of their presence to the judgment. The brithem was also assisted by a class of legal experts known as aíne or “referees,” whose function was to provide specialized knowledge of particular areas of the law. The procedure of the Brehon law was, by the standards of the early medieval world, remarkably sophisticated. The plaintiff brought the case before the brithem, the defendant was then summoned, and the trial itself was conducted by means of formal pleadings. The brithem then delivered judgment, which was binding on the parties and which could be enforced by the sanction of the tuath.
Honor Price and the Social Hierarchy
One of the most distinctive features of the Celtic legal tradition is the honor price system, a set of legal rules that assigned a specific monetary value to the honor of every individual according to his or her rank. The honor price determined the compensation due for injury, insult, or loss of status, and it gave a legal expression to the social distinctions of Celtic society. The Irish law texts assign specific honor prices to each grade of society, from the high king of Ireland, whose honor price is said to be seven cumals plus various supplementary payments, down to the lowest grade of dependent laborer.
The honor price was not a simple reflection of wealth. A man of the bóaire or cow-owner class, for example, had an honor price of two and a half cumals, while a man of the lowest noble grade had an honor price of seven cumals. The woman of the same class had an honor price that was a fixed proportion of the man’s, ranging from one-half for the wife of an equal marriage to one-third for the wife of an unequal marriage. The honor price was, in effect, the legal expression of the social and political status of the individual, and it operated as a kind of constitutional guarantee against arbitrary treatment at the hands of the more powerful.
The Welsh legal tradition had a similar system of social gradation, with the brenin or king at the top, the uchelwyr or nobles in the middle, and the taeogion or bondsmen at the bottom, and the Cyfraith Hywel assigns to each grade a specific sarhad or honor price.
The Law of Contract and Property
The Celtic law of contract was remarkably sophisticated. The Irish law texts distinguish a number of different types of contract, each with its own formal requirements and its own legal consequences. The simplest is the cocor or “compact,” an informal agreement between two parties that is binding but that does not require any special formality. More formal is the comar or “co-bargain,” a contract that is witnessed by a third party and that is recorded in writing. The most formal is the dliged or “obligation,” a contract that is sealed by oath.
The law of property in the Irish texts is built on the concept of fuidir or “tenure,” the right to use and to enjoy a piece of land in return for the payment of rent, the rendering of service, or the performance of other obligations. The most important form of tenure in early medieval Ireland was the fuidir do chiniud, the tenure held by members of the kin group, in which the land was held in common by the kin and could not be alienated from the group. The law of distress, the procedure by which a creditor could seize the goods of a debtor in order to enforce a judgment, was another major area of Irish law, and the Cáin Lánamna and the Bretha Crólige set out the procedure in great detail.
The Law of Marriage and the Family
The Celtic law of marriage and the family was distinctive. Marriage was a contract between kin groups rather than between individuals, and the law recognized several different forms of marriage, each with its own rules of property and inheritance. The most important form was the lánamnas comthinchuir, the marriage of an equal couple, in which the husband and the wife brought equal property to the marriage and in which the wife’s property remained her own throughout the marriage. The second form was the lánamnas for ferthinchur, the marriage in which the wife brought more property to the marriage than the husband.
The law of marriage recognized a substantial degree of legal personality for the wife. The married woman retained ownership of her own property, and she could bring legal actions in her own name. The husband had a limited interest in the wife’s property, and the wife’s kin group had a continuing interest in the marriage and in the property of the couple. The rules of inheritance were complex, with the land passing first to the sons of the marriage, then to the daughters, then to the brothers of the deceased, and finally to the wider kin group.
The Welsh law of marriage and inheritance was similar in form. The Cyfraith Hywel recognizes several forms of marriage, and the rules of inheritance are based on a similar concern for the integrity of the kin group. The married woman in medieval Wales had a recognized legal personality, and the laws of Hywel Dda include detailed provisions for the management of her property, the custody of her children, and the resolution of disputes within the marriage.
The Law of Tort and Compensation
The Celtic law of tort and compensation was based on the principle that every injury to a person’s body, reputation, or property required compensation in proportion to the seriousness of the injury and the status of the person injured. The Irish law texts distinguish between the sároth or “injury,” the eilic or “wound,” and the marb or “death,” and they assign to each a specific level of compensation based on the honor price of the injured person and the nature of the injury.
The Leth Cuing or “half-freedom” was a particularly Celtic institution. A person who suffered a serious injury that was not fully compensated could be placed in a state of leth cuing, a kind of limited outlawry in which the injured person was no longer bound by the normal rules of conduct and in which he was free to take compensation from the injurer by whatever means were available. The rules governing it were designed to prevent its abuse while preserving the right of the injured party to compensation.
The Welsh law of tort was similar. The Cyfraith Hywel distinguishes between the sarhad or “insult,” the anaf or “bodily injury,” and the llofrudd or “homicide,” and it assigns to each a specific level of compensation based on the status of the person injured. The galanas or “weregild,” the payment due for homicide, was a particularly important part of the Welsh law, and the rules governing it were designed to prevent blood feud by providing a fixed compensation that the kin of the deceased was bound to accept.
The Law of Procedure and Evidence
The Celtic law of procedure and evidence was elaborate. The Irish law texts distinguish between the toghairm or “summons,” the formal procedure by which the defendant was required to appear before the brithem; the breith or “judgment,” the formal decision of the brithem; and the forus or “execution,” the procedure by which the judgment was enforced. The rules of evidence, in turn, distinguished between the fis or “oath,” the fianaise or “testimony,” and the aird or “ordeal,” the formal procedure by which the truth of a disputed claim was determined.
The Celtic rules of evidence were based on a graduated system of proof. The simplest form was the fis or oath, in which the party made a formal declaration of the truth of his claim and the other party was required to deny it under oath. The more complex forms included the fianaise or testimony of witnesses, the production of written documents, and the aird or ordeal, in which the truth was determined by a physical test such as the carrying of a hot iron or the immersion in water. The aird was reserved for the most serious cases and was used sparingly.
The Welsh law of procedure and evidence was similar in form. The Cyfraith Hywel recognizes the hawl or “claim,” the amddiffyn or “defense,” and the barn or “judgment,” and it sets out the rules of evidence in considerable detail. The rules governing the use of the ordeal show the influence of both the older Celtic tradition and the Christian church.
The Survival of Celtic Law
The Brehon law of medieval Ireland was the longest-surviving of the Celtic legal traditions. The English conquest of Ireland in the twelfth and thirteenth centuries did not immediately displace the Brehon law, and the law continued to be administered in many parts of Ireland well into the sixteenth century. The Act of Supremacy of 1536 and the Act of Uniformity of 1560, which established the English common law as the law of the Kingdom of Ireland, marked the formal end of the Brehon law, but the tradition continued to be studied and copied in manuscript form for another century.
The Welsh Cyfraith Hywel, although it survived in manuscript form until the sixteenth century, was more rapidly displaced by the English common law. The Laws in Wales Acts of 1535 and 1542, which extended the English legal system to Wales, marked the formal end of the Welsh legal tradition, although the rules of customary law continued to be of practical importance in the administration of the principality for several more generations.
The Breton Très Ancienne Coutume survived as a body of law in use in Brittany until the French Revolution. The eventual displacement of the older customary law by the French civil law in the early nineteenth century marked the end of the Celtic legal tradition in continental Europe, although the Celtic elements in the legal traditions of the Celtic nations continue to be the subject of scholarly study.
Related Topics
- The tribal organization of the Celtic peoples is examined in detail, with attention to the structure of the tuatha, the cantrefi, and the pagi within which the law was administered.
- The women in Celtic society pages treat the legal, economic, and social position of women under the Brehon law and the Welsh Cyfraith Hywel.
- The history of the Celtic civilization provides the chronological and political context for the development of the legal system.
- The Celtic religion, mythology, and spirituality pages treat the religious and mythological background of many of the legal rules described above.
- The Celtic legacy today includes the continuing scholarly and political interest in the Celtic legal tradition.