I'm currently reading Lionheart by Sharon Kay Penman, who happens to be my favorite author of historical fiction. It tells the story of Richard I's crusade to the Holy Land (the sequel, A King's Ransom, which deals w/ his return, capture, etc. is not due out until 2014). The thing I like about Sharon is that she really does her research, so I can trust that her history is correct (to the extent that it is known), which makes her characters more believable.
Suzanne,I also love Sharon Kay Penman. I love the books on the Plantagenets, starting with "When Christ and his Saints Slept. I also love "The Sunne in Splendor". They're all great!