That being said, if anyone has any information about this individual, about this modern Jack the Ripper wannabee, please let me know.
Are you trying to buy andulolika's personal information here ? This is more of an physical threat than just saying "burn you".
Look at yourself !
I notice that this guy and the user that you mention has a serious disagreement when I saw that OP was questioning Andu loan just to pay his bid. You can see it here:
https://bitcointalk.org/index.php?topic=5262261.msg54927455#msg54927455
I know that this kind of argument is due to ego only so it's normal to see harsh words to be thrown out. I don't know both this guy but making small things BIG just to burn down the person you hate is not a good move.
I believe ignoring your foe here is the best solution to eased this kind argument.