Hello - AP1 (application form), TR1 (Transfer deed) and 2 x ID3s is correct
Panel 4 - Transfer by way of a gift - add "Full market value" and 130K - the fee is then
Scale 2 on half that value
Your BIL will be registered already so we have his name on record so if he's using that name still then it may not be an issue.
However if you are saying that his name has changed for some reason then that will need to be proven when submitting the application - I would suggest he seeks legal advice as to what his legal name is and if that needs changing how to do that.
The key for us would be the name he is registered with. We don't deal with legal issues re names so I'm unsure how he managed to get a passport in a name that didn't match his birth certificate but something to seek legal advice on as mentioned