Just captured a really weird zombie. Looks like he may be a zombie from the traveling trader, but won't let me name him.so I don't know if he will stay around or not.
Should I try to cure him or what?
Learn something new each day
That's a zombie villager. Specifically a librarian. If you cure him, he will give heavily discounted trades. Not sure about the naming issue.
Tossing him something may also keep him from despawning, though I don't think all zombies can pick things up.
If you're using the nametag correctly, you need to change the name on an anvil before using it, maybe the space is too confined so you miss when right clicking?
Finally got him named. I had mixed up my mametags and was trying to use an uninitialized one. Now I've got him, I have to go to the nether to get some blaze rods to make a brewing stand and the weakness potion.