: It was Phelot who decimated Avon's Grove. And those
: Thrall aren't the bodies from Avon's Grove - Thrall
: are made from centuries-old, dessicated corpses.
: Ghasts are made from the freshly dead. But they are
: undead nonetheless, which gets the point across that
: the dead of Avon's Grove sat up and walked off with
: their killer-masters.
Thralls CAN be created by plundering the "catacombs, crypts, and cemeteries of a thousand years" as one chronicler lamented, so Dark lords with sufficient necromantic resources often seem to boast an inexhaustible supply of them. -GURPS
As you can see.. GURPS says that it is possible to make thrall from old corpses.. not that old corpses are necessary (as I myself once thought).
-Milky