Godric's Hollow - How did Dumbledore know of Lilly's sacrifice?

[luna_loco]

No: HPFGUIDX 163865

Are there any theories on how Dumbledore knew Harry had survived
Voldemort's attack at Godric's Hollow and that Lilly's sacrifice was a
part of Harry's survival?

Either James of Lilly could have used a patronus to send a
warning/distress call during Voldemort's attack.  It is thus possible
for Dumbledore and the rest of the Order learned of the attack either
during the event or shortly there after.  It is even possible that
Lilly sent a report of James' death.  It is not however possible for
either Lilly or James to have reported that Harry had survived.

This raises the issue of how then did Dumbledore know enough to order
Hagrid to retrieve Harry from the ruins of his parent's house and then
place him with the Dursleys?  Hagrid even reports having argued with
Sirius at the Potter house about custody of Harry due to Dumbledore's
orders to take Harry to his aunt and uncle (POA Ch 10).  It is thus
clear that Dumbledore at least suspected Harry had survived
Voldemort's attack and had decided to use Lilly's sacrifice before
Harry had even been rescued by Hagrid.

Allen