Warning: wikipedia contains spoilers
The title character, Humphry Clinker, is an ostler who does not make his first appearance until about a quarter of the way through the story, when he is taken on by Matthew Bramble, a Welshman, and his family who are travelling through England. Various adventures befall them, especially after their meeting with Lieutenant Lismahago, a Scotsman, who joins their party. After various romantic interludes, Humphry suffers false imprisonment but is rescued and returned to his sweetheart, the maid Winifred Jenkins. It is then discovered that Humphry is Mr Bramble's long-lost son.