By General Artists Corporation (management)/photographer: “Bruno of Hollywood” – eBay itemphoto frontphoto back, Public Domain, https://commons.wikimedia.org/w/index.php?curid=18229272
A recent NPR article explores the rise, and fall, of the name Bobby in America. From an explosion in popularity in the post-war period, particularly among music stars, the name suddenly dropped out of popularity by the 1970s.
You can read the full article here.