“Dunstan” by Conn Iggulden is a stand alone novel in the autobiographical novel category. The Dunstan in question is Saint Dunstan, builder of both Glastonbury Abbey and Canterbury Cathedral, and spiritual advisor to several early English/Wessex kings.
Iggulden interprets some events from the life of Dunstan in very interesting ways!
His Dunstan is far from a saint – being a bully, a liar, a cheat, and a murderer. Given the time he lived in, this is quite probably more accurate than an hagiography could manage.
A rambunctious romp through Dark Age Britain leaving piles of bodies in its wake.
In a word: Fun.
Highly recommended.