That it’s not his last name. Middle names are the parents’ choice, they can be literally anything within the law. His parents could’ve instead called him “de Soto” or “da Vinci” or “von Hindenburg” or “Ortega y Gasset” or “Al Saud” or “Ó Briain” or “ben Maimon” if they wanted to, and I’m pretty sure none of those…