Margaret Franklin is the local history specialist in Limerick County Library. She has compiled a comprehensive guide to tracing families in the City and County of Limerick. The most common family names in Limerick include O'Brien, Ryan, O'Donovan, O'Sheehan, O'Hurley, O'Gorman, O'Scanlan, Fitzgerald, Wall, Fitzgibbon, Harold, de Lacy and Woulfe. The book is filled with information on what the records contain, and how and where they can be accessed. It is well illustrated with maps, examples of the records to be found; and other relevant material. There is also a comprehensive index.