@shogg0th,
I'm starting to reread a book CI said he just bought about the Medici. I remember being irritated in the beginning and am again. He sets up Cosimo in the tower and leaves him while he describes the bricks of Firenze.
It is Christopher Hibbert's The House of Medici, its rise and fall.
I've read him before, about Rome, and this one a bunch of years ago. My memory is like a sieve, as they say, but sometimes pinpointing. Anyway, I remember his books as data that helped me figure stuff out, but not books I somehow liked.
I've read a lot of all this elsewhere, long before I read Hibbert, but I'll read this for now (as in, I don't have a handy novel nearby).