Falyse is the second born child of Prince Calon Martell and the youngest of his bastards with the Orphan of the Greenblood, Yna. Her elder sister and only full-blooded sibling is Myriah Sand.

Along with her other siblings, Falyse was raised at Sunspear and the Water Gardens by her father and House Martell instead of by her mother.

Falyse has an affinity for animals, however, her absent-mindedness leads her to be known as a rather poor caretaker. Her past pets have included both parrots and turtles. She currently is in the possession of two kittens; an orange one and a gay-black one.