Philippa Gregory.
Titles I've written about:
Order of Darkness #1: Changeling (2012):
There is no real life in it. No spark, no heart, no swoon, no swoop. The writing is perfectly serviceable—no howlers that I noticed—but it feels passionless and rote. The characters were likable, sure, but they were also completely stock: the Good Guy Hero, the Determined Yet Resigned Heroine, the Hero's Comedic Sidekick, the Heroine's Plucky (not to mention "Exotic/Other") Companion, the Fish-Lipped Slimeball, the Money-Hungry Villain. None of them ever becomes more than a walking trope.