"I've heard of him, I think, but I can't say I know much about him either." That or possibly even more likely, he has heard of Jon but the information was filed away with all the rest he's come to learn over the years to wait its turn for being useful. Which it would be for now - if only he could get it to come to mind.

That's less important than beaming an actual, genuine smile to Claire delighted both by getting to know this information and that there's more to it just waiting to be uncovered.

"Well, go on then. How'd you meet if you didn't know him before? I'll make up my own tale for it if you're not careful." For mischief's sake, of course, and nothing too out there. Most likely.