Amazon.co.uk: Fourteen Byzantine Rulers: The Chronographia of Michael Psellus (Classics): Books: Michael Psellus,E.R.A. Sewter:

Currently reading this. I've been meaning to read it for a while, as a classic Byzantine text. For something written in the 11th century, it's surprisingly engaging, although I don't think Psellus comes across as a particularly likeable chap. He's also a bit of a gossipy old woman, although his pen pictures of individuals at court can be very well drawn.