Number 9 is Trinity, book 2 in Conn Iggulden's Wars of the Roses series.
This one starts off pretty interesting, as Henry VI comes out of his catatonia (modern efforts to diagnose Henry's mental illness have suggested schizophrenia) and becomes quite a strong-willed man. Completely different from what he's been before. He feels he must take back his kingdom from York and Salisbury (who have been running things since he's been ill), and so launches on a procession of his land, showing the people of England that he is able to rule again (this was his extremely capable and wily wife Margaret's idea). Of course though, York and Salisbury don't take kindly to what they see as them being forced to step aside; they want recognition for their help, and they feel that Henry is being unfairly poisoned against them by other councillors, which they kinda are, but it's still a pretty flimsy excuse for them to gather an army and go meet up with Henry at the town of St. Albans so they can talk it out.
So that goes badly.
Basically, this book deals a lot more with battles and political machinations, and we get more heavily into the Percy/Neville feud... which felt rather misplaced. Only a little time was spent on getting to know Warwick further (and given how important he's going to become, I think we need some more building there), and there was a very unfortunate lack of spymaster Derry Brewer. I did appreciate that we spent some more time with Edward of York, that's kinda important too.
While I didn't like this one as much as Stormbird, I'm still enjoying the series, and Margaret was still kick ass as she does all she conceivably can to keep and win back her husband's throne, although really her motivation is now to secure it for her son.