This collection of studies and edited texts is being offered to Professor Dafydd Jenkins as an appreciation of his contribution to the study of legal history and especially of Welsh medieval law. This contribution lies not only in his own published works but in the constant support which he has given to younger scholars over many years. The volume falls into two parts. The first part is concerned with a principal area of Welsh medieval law, Suretyship. The second contains studies on a wider variety of topics including Welsh, English, and European legal history.