The Last Potter!!

[Fred Waldrop]

No: HPFGUIDX 58077

I have been trying to keep up with the Heir of whoever vs heir of 
whomever and  all the reasoning behind Voldemort wanting to kill the 
Potters and spare Lily and the like, but their seems to be something 
missing from all the theries.
What I can't understand is what Dumbledore tells Professor 
McGonagall on page 13 (US) in SS/PS: "I've come to bring Harry to his 
aunt and uncle. They're the only family he has left."
Doesn't it seem strange to anyone else that not only all the Potters 
are dead, but all the Evans' are dead also? "They're the only family 
he has left", means no more Potters OR Evans.
So, these are my  the questions that come to mind:
1)Did V kill all the Potters and almost all the Evans?
2)Is the reason that Harry has to stay at the Dursleys to protect 
Harry, or the Evans, Patunia and Dudley, or all 3, Harry, Patunia and 
Dudley?
3)And if V did not have anything to do with all but 2 Evans dieing, 
why are there no more, anywhere?

I am sure this has been brought up, but up till now, I have not seen 
it mentioned.

Thanks for your time;
Fred Waldrop