Jon Stark is Brandon Stark's bastard., who Ned Stark legitimized . Jon has given up any claim to be King in the North as the Northern Lords still consider him unfit as his mother is not known . He has been raised by his Uncle Ned and Aunt Catelyn. Upon Neds death the , the crown has passed to Robb Stark and Robb has named Jon as his Hand.
Jon has a good relationship with all his cousins and they consider him an older brother as they do Robb . Arya is Jons favorite and visa versa. Arya has been betrothed to Ramsey Bolton but is not happy about it . Sansa and Jon have never interacted in any meaningful way as Sansa was sent to foster in the South in Kings Landing, she has returned early because of her father's death and to provide moral support to her mother . Sansa has just returned to the North and Catelyn is busy finding suitable Lords for her betrothal . Nobody is aware that Sansa has returned . King Robb is already married to Queen Rosalin , from House Frey.