Be careful what you wish for...
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Here's one I think would work:
https://www.bernardcornwell.net/series/the-grail-quest/
It's got elements of a bildungsroman, a quest, some family twists and turns and a good bit of action against the backdrop of the 100 Years War.
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I'd like to seem them try Thomas Covenant. I loved those books. The rape thing might be quite problematic nowadays, I guess. It was pretty problematic back then. It took the idea of an anti-hero to an extreme