PRONI & Coleraine Library (box #87) have microfilmed records from Ballykelly (Tamlaghtfinlagan) Church of Ireland-
Baptisms 1796-1835, 1835-1846, 1846-1861, 1861-1875
marriages 1796-1835, 1835-1846
burials 1796-1835, 1835-1846, 1846-1946
Vestry Book 1748-1881