Pretty sure somewhere earlier in the thread Warren's mum told him there was no way he was related to Stephen Lynch. Something was mentioned about not being from Irish immigrant stock like Stephen, so Warren decided he must be a distant cousin from generations back instead.
Edit: there's a quote from his aunt saying if they're related, it's from the 1850s and something to do with a murder. It's on page 1 of this thread. It's pretty safe to say no-one in Warren's family humour his insane idea that he's Stephen's cousin.