Question about the world of Al-Rassan

Hey, I'm currently reading The Lions of Al-Rassan and I know that this book shares a world with both Children of Earth and Sky and A Brightness Long Ago, and I was wondering if anybody knows (or knows a good GGK-wiki) the internal chronology of these novels? I have read both of the aforementioned novels but the details of books don't stay with me overly long, unfortunately.

Thanks!