People with peerages traditionally sign with only one name. I think that's what happened here with Elizabeth, Countess Warren. She did inherit the title from

People with peerages traditionally sign with only one name. I think that's what happened here with Elizabeth, Countess Warren. She did inherit the title from Earl Warren, right? (The real answer here is that The Hill is for political insiders so as soon as you saw the words Warren and TPP, they assumed you knew the subject.)