Given that neither of Maceo's parents' last names are Lion or Baldwin, the choice does raise a score of questions, but at least Maceo has a nice simple ring to it! (It worked for Halle Berry and Olivier Martinez.)
Williams' rep was reached for comment but has not yet responded.
This is the second child for Williams and Drake-Lee, who tied the knot in September 2012. The couple welcomed their daughter Sadie in December 2013. In Sadie's case, her last name appears to simply be Williams.