I got more curious, so I did some searching, and I just can't. Turns out Musk has some absurd number of children with several different women. And I only found that out through some pop culture/celebrity worship/exploitation websites I'd rather not have in my search history. I couldn't even find the name or age of the child in question (probably for the best, I wouldn't want my children to go through this, either), though it seems of the three children he had with Grimes, the oldest just turned 4. That's a bit young to even know what disowning is.