The Ordnance Survey Memoirs for County Londonderry often give lists of people who emigrated from each parish with their townland of residence and the port of arrival. These date c. 1834-1835.
- Parish of Aghadowey
- Parish of Aghanloo
- Parish of Artrea
- Parish of Ballyscullion
- Parish of Balteagh
- Parish of Bovevagh
- Parish of Coleraine
- Parish of Drumachose
- Parish of Dunboe
- Parish of Magherafelt
- Parish of Magilligan
- Parish of Tamlaghtfinlagan
- Parish of Termoneeny
Map of the Baronies and Civil Parishes of County Londonderry - on billmacfee.com