Their Stark. Not the Stark we have. Two different people. And Francis is more than a little angry with him over Ultron last I checked.
He's been having a hard time accepting that I give a damn. Keeps asking about my "real" kids like I don't actually want him in the family, or like he doesn't have a right to have someone care about him. And he's not like James and Torunn. He didn't get to enjoy the relative safety of growing up in hiding with Tony. He's been watching people starve and suffer and die around him for I don't know how long.
Have coffee. Do not have corned beef, you weird old man.