Anyone who has had any success in researching their Welsh ancestry will know that a grasp of specialized Welsh genealogical methods and sources is only one of several factors that contributed to that success. They will know, for example, how important it is in Welsh research to have some understanding of the social, cultural, religious, and economic background of the communities in which those ancestors lived. This book attempts to broaden that understanding, especially for the period prior to 1800 when most researchers begin to experience difficulties. In addition, it aims to make readers more aware of some little-known sources and the special uses that may be applied to the information found in these sources.