Brother Balatin in dreadlands (
http://wiki.project1999.com/Brother_Balatin), spawned after a couple of hours of PH killings.
He has stayed up for 6(ish) minutes (the normal "repop" time), than despwaned.
6(ish) minutes after, a new PH popped.
Checking in-game friends and some source (
http://eqthieves.com/class-monk-epic10.htm
"He has a Plaguebone Skeleton as a place holder and the respawn is approximately 6 minutes. Brother Balatin despawns after approximately 30 mins. ")
it should be 30 minutes before depop.