This name comes
from Nuall, which means a nobleman, and is a name that goes back
to the mists of early Irish history. It is numerous in all provinces,
but especially in Connacht and south-east Leinster. It is especially
connected with Co Carlow. The head of the family was the Prince of
Foharta (now known as Forth), in Co Carlow.
1,000 Years of O'Nolan History