Books in the Romances of Arquitaine, 2 series

Tristan d'Arcenne is what he always wished to beNVianne di Rocancheil's consort. But Vianne is no more a noblewoman, she is the Queen of Arquitaine, faced with treachery, invasion, war, and a consort whose secrets may well shatter their marriage. For before Tristan was hers, he belonged to a king who died by Tristan's hand.