Doing the J5 Merc quest I came across this guy. Saved him for last because I figured a named would be tougher. 92 Ench + pet + J1 Warrior Merc, 82 Mage + EM8 AirPet, 92 Wizzy + J5 Cleric merc After clearing all the frogs and other spiders I pulled him away from the big frog, Sent pets and merc to tank while three casters burned. Took about 40 seconds. Total HP was 470,000. Saw max hit of about 3100. Not as tough as I thought. All finished with 80+%mana and no deaths.
Seven hours doesn't seem unusual. I did his camp for 9hrs and not a single spawn. That was killing all the spiders. I came back the next day and he spawned twice within 2hrs. It sucks having to spend all that time at a single camp, but I love the dagger I got from him. Good luck.
Mob is a lvl87 warrior. Max hit on my 85 pally (4423 AC) was 5947. He didn't cast anything or do anything special during the fight. No Rampage. No Enrage and my 85 druid was able to snare it with Entrap AA. It was a pretty easy fight.
It spawned from a moss spider around /loc p1032, p1032 beside a little tree. I was pulling all the spiders in that area to /loc p837, p1163. It was a pretty safe spot.