I think Penelope Lively's The Wild Hunt of Hagworthy hasn't been mentioned yet. There's also The Ghost of Thomas Kempe, but it's less "folky".
See, a proper book, (little book, but a proper one) with an ISBN number and everything. Cover reveal and ordering details coming soon-ish. And yes, there is an-anti piracy, anti LLM curse embedded in the text. It is Hookland – you'd expect nothing less.