Katharina, she's the last member of the royal family of Narnia. When The White Witch, Jadis invaded to Narnia, Katharina's Godfather, Aslan, send The five years old Katharina away from Narnia for her own protection. She was sent to the old professor Kirke, who took her in right away. Katharina was told that one day she will return to Narnia when the time will be right.