The only reference to his real name in your screenshot is the first entry, which is purple and removable because it is coming from your browser's session identity history. If this was in fact in an incognito tab, it's likely you had one or more incognito windows simultaneously open somewhere else where you had searched for him, which carried over into your new tab.
Interesting. I suspect that the different results Google gives different people (even in incognito mode) are driving a lot of the divergence and even rancor between the two points of view.
https://imgur.com/a/Ppj57cP
Note that there's no reference to his real name.
The only reference to his real name in your screenshot is the first entry, which is purple and removable because it is coming from your browser's session identity history. If this was in fact in an incognito tab, it's likely you had one or more incognito windows simultaneously open somewhere else where you had searched for him, which carried over into your new tab.