"Oh, that's Welsh, which I mostly have a handle on. Cymraeg, to native speakers, if that rings a bell. They're definitely not meant to go together." This nonsense is what happens when something very vast and magical won't learn English but picks up Welsh through strange circumstances. Speaking of which, if either Penric or his passenger can sense strong magical energy, this kid is subtly radiating it. He's not a practitioner of magic or wearing magical artifacts, some part of his being is magic.

"Any help at all is fantastic, honestly. I really need to step up my studies if my grasp of Latin was tenuous enough that amnesia messed it up." He pulls a page out of the back of a different notebook and slides it over to Penric along with a spare pencil. "You can mark up the original too, don't worry about that."