EDIT: The point of this meta-discussion is NOT this particular example but the behavior present (intended or otherwise) in the example. I have also severely toned down the hyperbole and attitude... which may lead to a little confusion regarding the first few answers. Apologies.
I could be way off base here (so correct me if I am) but this type of question seems lifted solely on the merit of its catchy title.
The idea that Jennifer and Christopher are related is such a specific assumption that the entire question, and its title, are mostly irrelevant. The real question is, "What is the etymology of the name Jennifer?" At best, you could as "Do Christopher and Jennifer have similar etymologies?"
But that isn't as catchy. So instead we get a extremely narrow question about a relationship between two specific names that isn't likely to be useful in any other context. The top answer (as of this writing) completely ignores the Christopher suggestion and answers the real question. This suggests that the Christopher suggestion shouldn't have been there in the first place.
This pattern of question should be actively discouraged because it weakens the content of this site by restricting the domain to specific cases instead of general cases. Such a restriction helps when the topic at hand is broad, but this isn't one of those cases. In and of itself, this isn't so much an issue because we can just answer it and move on but I feel that the question was well received because of the title.
The reason I think these need to be forcefully addressed is because such a title will pull in more activity. I don't have a problem with someone getting clever and reaping reputation rewards but I think this is a bad question. Questions and answers that get upvoted past a certain point tend to get immunity. And they get mimicked. A good title shouldn't make up for a poor question.
I apologize for ranting. The condensed point is this: "Restriction the scope of a question so that you can use a more catchy title is bad and should be discouraged."