Available Themes

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• Total Population 1881 to 1971: Population fell from 277 in 1881 to 115 in 1971.
• Occupational Structure in 1881:

Here we are presenting statistics for a historical unit, which may have changed its boundaries significantly during the period covered.

Alternative names

The following alternative names exist:

Name	Status	Language	Start	End	Authority
TIR IFAN	Preferred	English			M. Richards, Welsh Administrative and Territorial Units (Cardiff: University of Wales Press, 1969), p. 203.
TIR EFAN OTHERWISE TRE EVAN	Alternate	English			1821 Census of Great Britain, Table [1], 'Population Abstract'.
TIR EVAN	Alternate	English			1851 Census of Great Britain, Table [1], 'Population Abstract'.
TIREVAN	Alternate	English			1871 Census of England and Wales, Table 4, 'Area; Houses and Inhabitants, 1861 and 1871, in the Parishes and Places comprised in each Superintendent Registrar's District'.

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
DENBIGHSHIRE	Ancient County			M. Richards, Welsh Administrative and Territorial Units (Cardiff: University of Wales Press, 1969), p. 203.
LLANRWST RegD/PLU	Poor Law Union/Reg. District			1911 Census of England and Wales, Table 5, 'Registration Counties, Districts and Sub-districts with their constituent civil parishes. - Urban or Rural District in which each parish is situated; Area; families or separate occupiers, and population, 1901 and 1911; and population enumerated in Institutions, large establishments, and on vessels, &c., 1911'.
HIRAETHOG RD	Local Government District	01 Apr 1935		M. Richards, Welsh Administrative and Territorial Units (Cardiff: University of Wales Press, 1969), p. 203.
IS ALED Cmt	Ancient District			M. Richards, Welsh Administrative and Territorial Units (Cardiff: University of Wales Press, 1969), p. 203.
ISALED Hundred	Ancient District			M. Richards, Welsh Administrative and Territorial Units (Cardiff: University of Wales Press, 1969), p. 203.
LLANRWST RD	Local Government District		01 Apr 1935	1911 Census of England and Wales, Table 5, 'Registration Counties, Districts and Sub-districts with their constituent civil parishes. - Urban or Rural District in which each parish is situated; Area; families or separate occupiers, and population, 1901 and 1911; and population enumerated in Institutions, large establishments, and on vessels, &c., 1911'.
LLANRWST RSD	Sanitary District			1891 Census of England and Wales, Table 4, 'Area and Population in Rural Sanitary Districts'.
YSPYTTY	Registration sub-District			1911 Census of England and Wales, Table 5, 'Registration Counties, Districts and Sub-districts with their constituent civil parishes. - Urban or Rural District in which each parish is situated; Area; families or separate occupiers, and population, 1901 and 1911; and population enumerated in Institutions, large establishments, and on vessels, &c., 1911'.
YSBYTY IFAN CP/AP	Parish-level Unit		by 1881	M. Richards, Welsh Administrative and Territorial Units (Cardiff: University of Wales Press, 1969), p. 203.

Boundary changes

This unit was affected by the following changes:

Date	Type of change	Other unit involved	Area transferred	Authority
01 Apr 1935	was enlarged by the abolition of	GWERNHYWEL CP/Tn	Area: 1307 acres. Population in 1931: 35.	1931 Census of England and Wales, Table B, 'Areas altered between 26th April, 1931 and 30th June, 1934, showing constitution as at the latter date, in terms of constitution as at the former date, together with particulars of acreage and population'.; M. of H. Order No. 78577. The County of Denbigh Review Order, 1934

Lower level units

This unit contained the following units:

Name	Type	Start	End	Authority
GWERNHYWEL CP/Tn	Parish-level Unit			M. Richards, Welsh Administrative and Territorial Units (Cardiff: University of Wales Press, 1969), p. 82.