Occam’s Razor would suggest that Ned brought Luwin south with him when he marched with the North’s armies, and then Luwin stayed at Riverrun when it was clear that Catelyn was pregnant.
Just a backup in advance of the detumblring
Occam’s Razor would suggest that Ned brought Luwin south with him when he marched with the North’s armies, and then Luwin stayed at Riverrun when it was clear that Catelyn was pregnant.