Who is it that Wormtail is supposed to murder, in GoF?

[Jen Reese]

No: HPFGUIDX 81543

Oh, I just had another thought--perhaps it was Frank Bryce and he is 
indeed murdered later in that scene just not by Wormtail. 

They would definitely need him gone in order to stay at the Riddle 
House and have the graveyard scene at the end of GOF, and the MOM 
would never know b/c, as we find out later, Dumbledore is the only 
one reading Muggle newspapers.

So they need to murder him for the plan, but just weren't expecting 
it to happen right that minute.  Jen