[Ragnar leaned back slightly with a sigh of his own and rubbed his hand over his face. Right. The young man thought he was somehow his son. Ivar had dropped the claim quickly when they'd first spoke, but others had mentioned it. Gyda had mentioned it. He wasn't sure if there was an easy way to correct someone when they had something like this in their head.]

Ivar. [It was a start, right? He looked over the young man like he hoped he'd just magically come to his senses.] How old are you? You look... seventeen, maybe? I did not have a child when I was fourteen. Who is your mother? Why has she never told me about you? [Maybe if he just pointed out all the reasons why it basically couldn't be true, Ivar would concede.]