A friend of my brother was handling a divorce about a dozen years ago where the couple was fighting over custody of their twin boys Waylon JohnCash and Willie Bocephus.
ya, it certainly isn't obvious when that is how he is listed on the athletics site without reference to his real first name. https://sjuhawks.com/sports/mens-rowing/roster/slam-dunkley/5084
Did you ever think Chipper Jones’ name was really Chipper despite being in every media guide ever as Chipper? Slam is pretty obvious to me.
Do you realize we are in the parents give their children silly names thread? You give me one example of a nickname while this thread is full of hundreds of examples of crazy names that are in fact real.