Here's Why You Never See Beyonce & Jay Z's Son Sir Carter Beyonce and Jay Z seem determined to keep their son, Sir Carter, out of the public eye, and fans are starting to notice a couple of red flags here. Blue Ivy has been out here doing her thing and taking on Hollywood by storm, stealing hearts left and right. Even little Rumi made some cute appearances. But it has been crickets when it comes to Sir, and some fans even completely forget that Beyonce even has a son. #jayz #beyonce #blueivy