Fellowship of Pan

From the White Wolf Wiki, the most complete White Wolf reference

This fellowship is an ancient group that joined the Cult of Ecstasy. It is rooted deeply in the traditions of Dionysus and ancient Greece that consorts with Fae (oWOD) and actually initiate their members by the wild parties of the Satyr. They were first introduced in the Mage: The Ascension corebook, and later expanded upon in the Tradition Book: Cult of Ecstasy.

In recent times they actually absorbed the violent faction of the Maneads and the pagan Kiss of Astarte, both of which had lost the support of some obscure force.