Our mission

To bring together the O'Neills of Ulster and O'Neills from around the world, and all those who share the various spelling of the name such as Neil, Neel, Neal,Nelson and many more. We are the living descendants of the most famous clan in Ireland, build your own family tree on this site...


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Join us now!

This is the Offical web site of the O'Neills of Ulster. With the support of our kinsmen, we are coming together to form a strong Celtic community  in Ireland and across the world. Become a member today and find out more about our history culture and geneolgy, and join in on all the discussions .


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Family Tree Project

Join our 'Family Tree Project'. Select your county and record your O'Neill family tree. Anyone outside Ireland please choose other