Find out Minecraft name?

I got a strong chestplate from someone on Hypixel Skyblock and he gave me a supercompactor. However, this person has now renamed itself. Can I find out his new name somehow? So, I have the old name, but not this new one. Can you find out somehow?

Look at "Name Mc" and enter his name there. His profile should be there and all the names he had, including his current one.
(You can also see skins there ^^)

If you have his UUID, you can paste it on https://mcuuid.net/ and see what name he had and what he currently has.