Oerth
OERTH, The World of Greyhawk
Most traffic that reaches Sigil from this Prime world comes from the continent known as the Flanaess. The Free City of Greyhawk is its largest settlement.
Xillian, Jhalefein, and Alantavra come from the drow city of Erelhei-Cinlu. Tylaric Stormwing hails from the realm of Furyondy.
SOURCES
Living Greyhawk Gazetteer, World of Greyhawk box set
