Book excerpt: "Medieval Wales had a separate system of law to that found in England, and the law has been preserved in several medieval manuscripts. Whilst the purpose of the law manuscripts was to lay down the legal complexities of the era, what has been preserved can also be read as fascinating literature in medieval Welsh. An important element to the law manuscripts is the large collections of legal triads (lists of threes), probably composed for educational, mnemonic purposes, which offer a real insight into the workings of medieval Welsh law." "The Legal Triads of Medieval Wales is an new study and the first full exploration into the legal triads - among the largest collections of triads found in Welsh - covering almost every aspect of medieval Welsh law. Each triad is set in its literary and legal context, with a full edited text, translation and notes for each triad found in the law manuscripts." --Book Jacket.