I've just finished the first book in Stephen (Steven?) Lawhead's King Raven Trilogy "Hood" and I rather liked it I admit.
I've only read his Pendragon cycle but I like the way he put a more historically accurate slant on it. While Pendragon is loosely based on the Legend of King Arthur and Merlin but moved from the traditional "knight in shining armour/romantic renaissance-esque setting" in to a historic Roman/Briton time frame Lawhead has done somewthing similar with Hood.
It might seem odd putting a Robin Hood story in the middle of a Norman/Welsh setting but it works and it makes sense. Like King Arthur there are historical roots in Robin Hood that go back much earlier than what is usually depicted. Poems and bardic tales go back to about 700/800AD that have a Robin Hood character of varying names in them so it make sense to move him back too. Due to Royal woodland/forestry practices and laws in the typical Robin Hood time frame it would have been hard for our Band of Merry men to hide out in Sherwood for any length of time as wood and forests were already being thinned out by then and used primarily as noble hunting grounds. It also needs to be remembered that the Long Bow (Robin's weapon of choice) which most people take to be an "English" weapon was first used against the "English" by the "Welsh".
So here in Hood, we have a deposed Welsh/Briton prince starting what is a basical war of resistance againt the Norman invaders in an area that is now the Welsh / English border, an area of forest largely untouched due to it being a some what No-Mans-Land between the two. The Normans of course conquered most of England in a couple of years but took nearly 200 years to conqure what is now Wales... if they ever truly suceeded.
It might not be accurate but it works and I'm looking forward to reading the next.