The Outlaws of Sherwood by Robin McKinley is a historical fiction book set in Merry Old England. The reigning monarch is Richard the Lionheart, but while he fights the Crusades, England is a bit run down.
Robin is a young Saxon. He lives under the heavy taxation demanded by the greedy Norman, Sheriff of Nottingham, who harbors a hatred toward Robin because the sheriff courted Robin's mother and lost her to another man. Robin's parents have died, and he is a king's forester. But little does he know what is to happen as he makes his way to the Nottingham Fair.
This was a delightfully written book of adventure. There were parts of the book that tended to drone on with too much detail. I recommend this book to any age so long as the reader is patient.