Standard Welsh Place-names
Notes
This is the form recommended in the national standard reference work, A Gazetteer of Welsh Place-Names (University of Wales Press, 1967). One should not deviate from its recommendations without good reason.
This is a Welsh name and therefore the element ynn should be spelled in the standard way; ynn refers to more than one ash tree.
The hyphen is used following the element pont when it precedes the name of a ford (rhyd) which contains the definite article and a monosyllabic element.
If the difference between the ‘Welsh form’ and the 'English form’ consists of only one or two letters, the use of a single form is recommended, with preference being given to the ‘Welsh form’. This accords with the recommendations of the Ordnance Survey and the Highway Authorities.