Welsh

Free to read here, from Project Gutenberg.

The Sylph, Volume I and II

Georgiana Spencer Cavendish, Duchess of Devonshire, also an audiobook

Welsh Nationality, and How Alone It is to Be Saved: A Sermon

William Gabriel Davies

A letter addressed to the Right Honourable Lord Robert Grosvenor, M.P.

Ieuan Glan Geirionydd