Obelisk Warlord
From Emperor's Hammer Encyclopaedia Imperia
Obelisk Warlord is the rank that comes after Obelisk Battlelord in the Obelisk Order. It's equal to the Krath variation - Krath Pontifex and it's Sith counterpart - Sith Warlord.
The next rank after Obelisk Warlord is Dark Adept
OWL is the appointment rank for any of the Dark Council positions other then DGM and GM