One afternoon last August, at a hospital on the outskirts of Los Angeles, a former beauty queen named Emma Coronel gave birth to a pair of heiresses. The twins, who were delivered at 3:50 and 3:51, respectively, stand to inherit some share of a fortune that Forbes estimates is worth a billion dollars. Coronel’s husband, who was not present for the birth, is a legendary tycoon who overcame a penurious rural childhood to establish a wildly successful multinational business. If Coronel elected to leave the entry for ‘Father