As soon as I hit level 20 I went straight to Grizzleheim without being prompted to (having a quest telling me to go there). Right now i'm on he quests "Holm Sweet Holm" and "The Yardbirds." But recently (after deleting and re-installing w101 due to refreshing my computer) I got a quest from Ambrose called "Call of the North." I don't remember whether that was the first quest I got in Grizzleheim or not and want to know if I'll have to redo Grizzleheim, if only to make space in my quests page.
Took some time to research this and luckily, you don't have to. The quest "Call of the North" you get once you are level 25. The quest before it is "Immigrant Song" which you had to complete before receiving "Call of The North." . Once you hit 25, Ambrose gave you "Call of The North."