(Catelyn IV, Jon III, Eddard IV, Tyrion III, Arya II, Bran IV and Daenerys IV).
The Stark children are listed by their generation: Catelyn's son Jon, Eddard's son Robb is not mentioned but his sons are, then Tyrion's siblings, Arya's sister, Bran's brother, and Daenerys' sibling.