Shield of three lions

the long version

Eleven-year-old Alix is the daughter of the baron of Wanthwaite, whose lands along the Scottish border are among the best in England. But when her family is killed and her lands seized, Alix is forced to flee from the only home she’s ever known. Her one hope of restoring her inheritance is to plead her case to King Richard the Lion Heart, who is far away in France, preparing to go on his Crusade. Alix resolves to follow him. She cuts her hair, dresses as a boy, and takes the road south to London.