Well, Find + Word Search will allow you to create a file of all who match a specific criteria. But then, to weed out those where the surname is what you're wanting to find as a given name, you would have to do some, possibly quite a lot, of pruning on that report.
I've often used that approach, but it often requires that I whip up a computer program to let me safely weed out the unwanted in relatively fast order. The question is, can you? Or would you have to do it by sheer brute force?
You know what you want. Now you just need to figure out the best way to get there.