Alternative names

The following alternative names exist:

Name	Status	Language	Start	End	Authority
CWMHEIOB	Preferred	Welsh			M. Richards, Welsh Administrative and Territorial Units (Cardiff: University of Wales Press, 1969), p. 91.
CWMHEYOP	Preferred	English			M. Richards, Welsh Administrative and Territorial Units (Cardiff: University of Wales Press, 1969), p. 91.
HEYOP	Alternate	English			1851 Census of Great Britain, Table [1], 'Population Abstract'.

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
RADNORSHIRE	Ancient County			M. Richards, Welsh Administrative and Territorial Units (Cardiff: University of Wales Press, 1969), p. 91.
HEYOP CP	Parish-level Unit			M. Richards, Welsh Administrative and Territorial Units (Cardiff: University of Wales Press, 1969), p. 91.

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.