KILLELAGH CIVIL PARISH
| County: | Londonderry |
| Barony: | Loughinsholin |
| Diocese: | Derry |
| Poor Law Union: | Magherafelt |
| Probate District: | Londonderry |
| Area: | 13,303 acres |
| Population in 1831: | 3,045 |
| Topography: | This parish which is bounded on its eastern boundary by Carntogher mountain (1,521 feet), and lies 2 miles north of the town of Maghera, was separated from Maghera parish in 1794. |
| Villages: | Swatragh (population of 204 in 1831) |
| Landowners in 1837: | The Mercers’ Company, the Ironmongers’ Company and the See of Derry. |
| RECORD SOURCES | |
|---|---|
| Tithe: | 1833 |
| Griffith’s Valuation: | 1859 |
| Census: | 1663 (Hearth Rolls), 1740 (Protestant Householders), 1796 (Flax Lists), 1831 and 1901. |
| CHURCH REGISTERS | |
| Church of Ireland: | Pre-1870 none. Now joined with Maghera. |
| Presbyterian: | Swatragh – Baptisms from 1851 (united with Culnady in 1898) |
| Roman Catholic: | Maghera – Baptisms and marriages from 1841 and burials 1848-1888. Swatragh established 1887. |
| GRAVEYARDS AND TOWNLANDS WHERE FOUND IN 1859: | |
| Roman Catholic: | Granaghan |
| TOP TEN SURNAMES IN 1859 (in descending order): | |
| 1 Bradley; 2 Convery; 3= Kane and McIldowney; 5= Doherty and Gribbin; 7= Dimond, Lytle and McShane; 10 Slamon | |