Once again, we dredge up the worthless detritus accumulating at the bottom of the ditch that runs alongside the highway of history. Identify this battered tin can of a fact, if you will.

He's the only North American chief executive* ever to have been married to the daughter of a another North American chief executive (note: they did not hold office simultaneously). Who was he?

Short and to the point, isn't it? The first correct answer posted to comments wins a mostly-empty tin of Levenger Page Points, which are good for ostentatiously marking up your books with expensive metal doodads instead of using a pencil or a post-it. They are, in short, about as useful as the knowledge required to answer the average quiz question.

Googling is wrong. So is going to your groaning shelves of reference works. The answer is, I feel, inside every one of you, like a tiny man lodged just under your sternum. Set him free!

*ADDENDUM/CLARIFICATION: I'm using "Chief executive" in the sense of, for example, the U.S. President or the Canadian P.M. -- not the CEO of the USA Network or of Canadian Brand® Hair Products. Apologies for any confusion...