Now, I remember reading that Richard I was betrothed to Alys, Countess of Vexin, daughter of Louis VII of France, in 1169, but for whatever reason the marriage never took place and was broken off.
What would've happened had Richard and Alys married? What consequences might've arisen if they had had children?
When might they get married? How does this influence relations between France and England? As well as relations between Richard and his father?