In 1870-72, John Marius Wilson's Imperial Gazetteer of England and Wales described Brynhedydd like this:
BRYNHEDYDD, a township in Rhuddlan parish, Flint; near Rhuddlan. Pop., 48.
The location is that of Brynhedydd Road in Rhyl. The name "Brynhedydd" has not been found as a place name on a topographic map.
A Vision of Britain through Time includes a large library of local statistics for administrative units. For the best overall sense of how the area containing Brynhedydd has changed, please see our redistricted information for the modern district of Denbighshire. More detailed statistical data are available under Units and statistics, which includes both administrative units covering Brynhedydd and units named after it.
GB Historical GIS / University of Portsmouth, History of Brynhedydd, in Denbighshire and Flintshire | Map and description, A Vision of Britain through Time.
Date accessed: 19th June 2013
Click here for more detailed advice on finding places within A Vision of Britain through Time, and maybe some references to other places called "Brynhedydd".