Royal baby madness has gripped both Britain and the world, with the birth of the first child of the Duke and Duchess of Cambridge, aka Will and Kate. The healthy boy, third in line to the throne, was born late Monday afternoon, weighing in at 8 lbs., 6 oz. With photos of the little prince on their way, we have been spanning the globe for glimpses at lesser-known young heirs to thrones and other seats of power.