Watch The White Princess Online at Couchtuner. Adapted from Philippa Gregory’s best-selling novel of the same name and part of The Cousins’ War book series, “The White Princess” sees England ostensibly united by the marriage of Elizabeth of York and King Henry VII, but their personal and political rift runs deep and the war that rages between them threatens to tear the kingdom apart once again. “The White Princess” is a tale of power, family, love, betrayal and death, which charts one of the most tumultuous times in British history uniquely from the point of view of the women waging the ongoing battle for the English throne.