The skepticism about his father was something Jon was used to, ever since he could remember. After all, he was the only ink blot in his father's clean parchment.

"There is no doubt, my lady. I was raised in Winterfell alongside my father's trueborn children. I never knew who my mother was; my father never spoke of her."

All he knew, was that it wasn't Lady Stark. And it would seem that all physical features he retained was from his alleged father: the long face, the dark curls and the grey eyes. He was all North, all Stark but in name.