Here are some other websites you might find useful.

Bellaghy Historical Society

Family History Society - Coleraine Branch

Ballymaguigan Roots

1859 Griffith's Valuation for Co Londonderry

1859 Griffith's Valuation for all Ireland

Search for names in Graveyards around the Magherafelt area.

Search for names in Lavey Parish Graveyard

Lavey Parish Baptisms in the 1800's

Lavey Parish Marriages in the 1800's

Search for an Irish Townland

Worldwide noticeboard for ancestral researchers

Ulster Place-names Society

Northern Ireland Place-name Project

Find out a little about the culture of Northern Ireland

Locate towns, villages and postcodes in Northern Ireland. (and the rest of the world)

If you discover any broken links, please let me know.
Also if you are aware of any other websites that may be helpful to anyone researching families from the Castledawson/Bellaghy/Maghera area, please let me know and I will add them to this list.