Ogre Pet Whistle and Gortho
I get a stack of Ogre Pet Whistles every couple of weeks and haven’t had issues starting the quest. I always port to Grostogg’s Krall WP where I have to defend against a couple waves of branded, perform the escort mission, then defend Gladefall from the Flame Legion, so your wiki quote is accurate in the steps you need to perform.
The cycle of events seems to repeat pretty quickly after it’s completion, so if you see Gortho at Gladefall that means the event chain is over. Check back at Grostogg’s Krall in about 30 min to see if it’s starting over.
But …. i can’t get the event to start… the npc is already alive and safe.. but he’s not a merchant. =/
You then might have to wait for the event, Help the ogres remove the Branded from their land.
When I got my whistles, I did this event first then ended up at Gladefall with Gortho. After a pause the next event started and he became a merchant selling whistles.
Wiki, unfortunately, doesn’t seem to have this set of events fully documented. You might have to hang around by him till he leaves Gladefall to start the first stage of the events.