Alternative names

The following alternative names exist:

Name	Status	Language	Start	End	Authority
CEFNHELG	Official	English			M. Richards, Welsh Administrative and Territorial Units (Cardiff: University of Wales Press, 1969), p. 38.
CASTELL CEFNHELYG	Preferred	English			M. Richards, Welsh Administrative and Territorial Units (Cardiff: University of Wales Press, 1969), p. 36.

Unit associations

We know of no associations with other units.

Unit history

This unit was part of the following units:

Name	Type	Start	End	Authority
ANGLESEY	Ancient County			M. Richards, Welsh Administrative and Territorial Units (Cardiff: University of Wales Press, 1969), p. 36.
LLANBADRIG CP/AP	Parish-level Unit			M. Richards, Welsh Administrative and Territorial Units (Cardiff: University of Wales Press, 1969), p. 36.

Boundary changes

We know of no boundary changes affecting this unit.

Lower level units

We know of no units which were contained within this unit.