Template:Welsh Counties
Documentation: Welsh Counties
This template contains exactly what it suggests - links to every Traditional County in Wales, which for this purpose includes Monmouthshire.
Whilst it is possible to use this template as a stand-alone, it is designed for use within the Navbox, where it appears as a Cat item.
To use this template within a Navbox, copy the code below.
{{Navbox | cat=Welsh Counties}}
To use this template as a standalone template, copy the code below.
{{Welsh Counties}}