Character: Varuna Pyke
Actress: Kiernan Shipka/ Keira Knightley
True name: Rhaella II Targaryen
Father: Rhaegar Targaryen
Mother: Lyanna Stark
Twin: Aegon Targaryen aka Jon Snow
Love interest: Yara Greyjoy
Ward to House Greyjoy until she was six then slave.
Trailer