Includes maps detailing the location of Roman Catholic parishes in all thirty-two counties of Ireland and Presbyterian congregations in the nine counties of Northern Ireland,and contains a complete geographical picture of the three major religious denominations in Ireland during the middle years of the 19th century.This edition is not only invaluable for tracing your pre-1864 ancestors in church records but also for locating your post-1864 ancestor in civil records, for this volume provides descriptions and maps of the parochial and civil administrative divisions to which all major Irish record sources are linked. [from the publisher]