In the period 1836 to 1925 some 12,500 men served in the Dublin Metropolitan Police. This book collects information on all these policemen, constituting a quarry for their hundreds of thousands of descendants in Ireland, the United States and elsewhere. There are introductory chapters about the history of policing in Dublin, followed by a core chapter on 'Tracing your ancestors in the Dublin Metropolitan Police'. This is followed by the useful appendices which in turn include a complete alphabetical list of 12,566 names -- of all DMP men arranged by year of birth and native parish.