Well you could go on a quest guide on:
www.Runehq.com or www.Zybez.net they both seem helpful to me with quests.
The Knight of Ardougne is found in the East Ardougne market place.
You don't. You have to buy it.
sir vant's room is in the white knights castle look on the west and you will find sir vant in the room.
No.
yes, it is.
www.runescape.com
Treasure Trails - Rune Scape Guides can be found at webpages like Rune Scape, Rune HQ, and Rune Scape Services and all explain how an individual can carry a clue scroll in the game.
The price constantly changes.
Rune Wiki, its different each time.
Buy them.
Possibly
NO