Quote:
He may be found if you enter the large building around -100, -600, head up the stairs to the third floors to -134, -642, 122, then click on the X sign to get teleported. Go up and open the first door on the right.
When at that location above, you very likely see "a Vigilum Cohortis". You need to click on the tapestry/wall behind him, to get ported.
Took me a few to find out...
GL