Last year I read through God's Philosophers, which got me interested in the medieval church - especially because James Hannam clearly has a point he's trying to make, and so a more neutral history might help complete the picture.

So I got a copy Western Society and the Church in the Middle Ages, which is part of the Penguin History of the Church. I understand these are pretty standard texts at schools of theology etc. This book seems to focus on the church structures and politics - it covers the rise and fall of papal authority, the interaction between the Western and Eastern churches, and the rise of monasticism. However, it doesn't really cover the history of theology and Christian thought at all. I don't recall Thomas Aquinas even getting a mention.

When I get into the next book in the series - The Reformation - it quite quickly gets into theological issues. It mentions already existing theologies like Scotism and Thomism, but I never got to see these theologies develop in the previous book.

So, can anyone recommend a good book on the history of theology before the reformation? Anything in the period from about 500 AD to 1500 AD would be interesting to me.