It is obvious to any one, that the name of this parish can signify no
other than an Altar or church dedicated to St. Nunne; which St. Nunne,
being in some accounts called Naunita or Nannites, and in others
Novita, is (as Leland tells us) said to have been the daughter of an
Earl of Cornwall, and mother of St. David, the famous Archbishop of
Menevia, from him called St. David’s.