The North West Liberties of Londonderry were established by
The Honourable The Irish Society when they invested money to rebuild and expand the ruined town and monastic settlement of
Derry, which had been destroyed in 1608, and enjoyed heavy influence over how the North West Liberties were run. There was originally doubt as to whether the freeholders of the North West Liberties of Londonderry were to be considered a separate barony from the City of Derry for election purposes. The North West Liberties joined with the newly rebuilt and renamed City of Londonderry (also known as the City of Derry) in establishing a unified Town Watch in 1829, in an agreement that would eventually evolve to become the
Londonderry Borough Police. The joint policing partnership between the city and the Liberties was later adsorbed into the jurisdiction of the
Royal Irish Constabulary (RIC) following the abolition of the Londonderry Borough Police in 1870. ==List of major settlements==