THE URN OF SACRED ASHES
Arl Eamon of Redcliffe is dying, poisoned by the blood mage Jowan, and the only way to save him is to find the Urn of Andraste. You can begin this quest by either finishing Arl of Redcliffe or by heading to Denerim and speaking with Brother Genitivi's apprentice. If you completed the quest A Fallen Templar, you can read Ser Henric's note for clues on where to start the search: Brother Genitivi's residence in Denerim.
Walkthrough
Will only be for Denerim part, will have to go to the Urn of Sacred Ashes for the rest of the walkthrough for this questline
Brother Genitivi’s House
The Warden should travel to Genitivi's Home in the Denerim Market District to find him. Within, the Warden will meet Weylon, who nervously reports that Genitivi has gone missing. Using Coercion the Warden may acquire more information about Brother Genitivi's (last known) location: Lake Calenhad.
High Cunning will tip you off to Weylon's suspicious behavior. At this point the Warden can:
Travel to Lake Calenhad Docks:
The Innkeeper of The Spoiled Princess seems a bit jumpy, especially if you ask about Brother Genitivi. He can be coerced to reveal a bit more: "they" have been keeping the inn under observation, looking for anyone who asks about Genitivi. Upon leaving the inn after this conversation, the party will be ambushed by Cultists.
The Cultist Leader has a chance to drop Ceremonial Armor.
Returning to the innkeeper after dispatching the cultists results in dialogue and a reward.
Returning to Weylon, a confrontation ensues.
Investigate the rest of Brother Genitivi's House:
If you approach the back room, Weylon will try to stop the party. The Warden can back off, or fight him.
(Either through sufficient Cunning or after following up the Lake Calenhad 'lead') Accuse Weylon of hiding something:
This leads to a confrontation that Weylon is unlikely to survive.
Now you can investigate the house
After this you can travel to Lake Calenhad Docks for the above described events.
The house of Brother Genitivi contains a corpse (described as the real Weylon) and Brother Genitivi's Research, which indicates he was headed for the Village of Haven in search of Andraste's Ashes. You can see this village now on your world map, in the Frostback Mountains.