Nothing about how Vid was brought up in Ep 361 feels like it suits how things went with Void, though.
For reference, here's the scene in question, translated by Puella:
Consider how SK actually regards Void. Their history should have colored this conversation. Instead, it's essentially:
"Oh yeah, your dad for whom I have a thousand-year-old grudge against, and who sacrificed me and my lady friend, I recall him well!". It wouldn't be so casual. It would have been addressed or alluded to in some way, because of how it ended with he and Void, either by Ged or by SK. Instead, we get absolutely nothing (a
void!).
Beyond the hypothetical mentioning of Void in this conversation feeling a bit tone-deaf, there are some messy implications of Void, a God Hand member, still having a child alive. Recall how it worked with The Count and Theresia. This proposed arrangement of events would mean that Void's son, a vestigial connection to humanity, was meaningless; that Gaizeric's capital city, which he sacrificed, was more important than his son. That sounds like a pretty unlikely setup to me.
I think Vid was, like Ged, a great guru and leader of the outlying village of Elfhelm. That makes him pretty important, and someone who Gaizeric would have naturally spoken with (the context here is "hold an audience" because he's a king). But none of that means he
has to be Void just because he's in proximity to Gaiseric. This was a time in the Berserk world's history where there were
many magic users, not just those in Elfhelm. There were several candidates for Void. He remains a mystery, unfortunately.
But I think we absolutely would have seen the village, human Gaizeric, the lady medium of the cherry blossoms, and yes even Vid, in flashback form by this time if Miura were still alive. The story trajectory and hints that he was dropping were surely heading in that direction, and Miura even mentioned focusing on Skull Knight in his 2020 interview. We would probably already know about the real Void by now. But reaching for the solution and feeling content because of the convenient romanized similarity of Vid/Void feels like intellectual laziness, to me. As it is, we have a very incomplete picture. But if that's enough to solve the riddle for you, well... it must be nice to have some closure!