Hi Ringading
The 10 people I mentioned were only within the Mercers Estate - four other estates cover the south Derry area of which Magherafelt is the main town with many more Campbells. A quick look at the census for 1831 (see link in my previous post) shows 19 households where James Campbell is the head of the family, including two in Maghera town (both Presbyterian). The town Campbell households in the census in Moneymore town (in the Parishes of Ardrea and Desertlyn) are headed by Anne and George respectively. There is also a James Campbell living in Magherafelt town itself on Charity Street. This family was Church of Ireland and included 4 males and 6 females (names of family members not recorded in 1831 census). Of the 19 families, 8 were Presbyterian, 6 Church of Ireland and 5 Roman Catholic. If you know what Church your family belonged to this will help cut down the options.
