To find out if he has any, you might try these methods:
* Search online: Look for mentions of Ralph Schippers in online forums, social media, or news articles. Nicknames are often used informally, so these sources might give you clues.
* Contact Ralph Schippers directly: If you have a way to reach him, you could simply ask him if he has any nicknames.
* Ask people who know him: If you know people who are close to Ralph Schippers, they might be able to tell you if he has any nicknames.
Without more context or information about Ralph Schippers, it's difficult to determine if he has any nicknames.