Blood royal - Vanora Bennett

The story of a great queen, a woman of enormous courage who made her own rules, and a true survivor. This is the first in a series of late medieval novels by Vanora Bennett, the author of Portrait of an Unknown Woman.

1420, and a young princess is offered in marriage to her country's enemy, her nation's conqueror. She is Catherine of Valois, he is Henry V. She is a princess of the French blood royal, he is the son of the usurper of the English throne. Fresh from battle he claims his bride and the right to the throne of France.

Now Catherine must live as queen to a man more comfortable with war than anything else and as the wife of a man determined to destroy her people. Alone and friendless, she finds the only man who can understand what she feels: a young Welshman, Owain Tudor, who is as much adrift among the English as she is. It's a matching of souls but this friendship will turn out to be as dangerous as it is irresistible.