Philadelphia has a lot of Scions. The Pythian Congress is the group that keeps them from stepping on each others' toes and coordinates their activities.
The Pythian Congress is a collection of 10 characters that will let you start your own Pythian Congress in a game based in Philadelphia and the Gods, or anywhere else there where Scions gather in great numbers.
Note: One character is a Scion of Liber. Basic notes on Liber are included, but more detailed information is available in The Republican Pantheon.