Do you have Newspapers in your collection?
The National Library of Wales has a large collection of Newspapers for readers to order, you may use this link to search the Library’s catalogue:
https://discover.library.wales/primo-explore/search?vid=44WHELF_NLW_NUI&lang=en_US
The Library also has a list of external e-Resources, and you may follow the link here:
https://www.library.wales/discover/other-resources/external-resources
These external e-Resources include the 19th Century British Library Newspapers, The Times Digital Archive 1758 – 1985 and The Waterloo Directory of English Newspapers and Periodicals, 1800-1900.
You may also use 'Newsplan Cymru', and search its newspaper database for relevant sources. You may follow this link provided to get to the website:
http://www.newsplanwales.info/s001.htm