Athyn Sarethi's Quests, ( Ald'ruhn)

Rescue Varvur Sarethi - Rescue Sarethi's son being held in the Venim Manor in Ald'ruhn.
Once you've reached Rank 4, Athyn Sarethi in his manor in Ald'ruhn's Manor District will ask you to rescue his son, Varvur, who has been accused of murder and is being held in Venim Manor (Ald'ruhn Manor District). You must be careful when rescuing him not to kill the councilman Bolvyn as the other council members will turn against you (for the main quest).
To find Varvur, find the Right Wing of the Venim Manor. In the large room, on a bench, you should find a Note to Malsa Ules and a key. The note says that the guest is in the room behind the tapestry. You'll find the door and tapestry nearby, and the key on the note opens that door (50 level lock). Remember the nearby guards won't like it if you take the key or the note. 
Once you find Varvur, escort him back to the Sarethi manor and his father. Note that any guards that see him will attack, so planning the fastest route ahead of time might help. You are free to kill the guards, but again be careful not to kill Bolvyn.
Report back to Sarethi with his son to complete the quest. Note that this quest is also part of the game's main quest in your attempt to become Hortator of House Redoran.

Investigate Murder of Bralen Carvaren - Start the investigation into this murder of Sarethi's friend.
Athyn Sarethi in his manor in Ald'ruhn's Manor District will ask you to clear his name in the murder of Bralen Carvaren and find out what actually happened. Sarethi will tell you that he is innocent of the crime and that Bralen was a friend. Keeping talking to him to learn that he thinks that his son, Varvur, may be under a spell and ask you to check his room. Check 
Varvur's room and take the Ash Statue. Talk to Varvur to learn that he has been having dreams when he received the statue and asks you to take it. Talk to Sarethi again about the statue and he'll direct you to Lloros Sarano at the temple in Ald'ruhn.
Report to Lloros Sarano, give him the statue, and talk about the murder of Bralen. Sarano will instruct you to tell Sarethi and his son to meet with. Travel back to the Sarethi manor and inform Athyn Sarethi to complete the quest. Note that this quest will start a series of quests from Sarano to find out where Varvur got the ash statue.

Duel Ondres Nerano - Restore the honor of House Redoran by duelling this fellow in Balmora.
Athyn Sarethi in his manor in Ald'ruhn's Manor District will ask you to defend the House Honor by challenging Ondres Nerano to a duel. Nerano is in his manor in Balmora and talk to him about slander and accept his challenge to a duel. You win if you knock him out, his health drops below 50, or he dies (which is fine as long as he issued the duel challenge first).
Report back to Sarethi in Ald'ruhn to complete the quest.
 
Take Care of Smugglers in Shurinbaal - Kill the smugglers in this cave near Gnaar Mok.
Athyn Sarethi in his manor in Ald'ruhn's Manor District will ask you to take care of some smugglers in the cave of Shurinbaal by killing their leaders. The cave is just Southwest of Gnaar Mok on the coast. Once you find the cave, you just need to kill the smugglers named Daroder and Enjine (but feel free to kill anyone else you find there).
Report back to Sarethi in Ald'ruhn once the two smugglers are dead to complete the quest.
 
Mad Arethan Mandas of Milk - Take care of this former Redoran noble who has gone mad.
Athyn Sarethi in his manor in Ald'ruhn's Manor District will ask you to kill a former Redoran Noble, Arethan Mandas, who has gone mad. Arethan is in a cave known as Milk and is harassing travellers by demanding for tribute. Milk is found a little ways to the West of Ald'ruhn. The simplest and quickest method, is to just kill Arethan, though there is another solution. Sarethi mentions that Arethan's father, Llerar, can be found in the Grand Council Chambers in Ebonheart, and that you might want to talk to him before travelling to Milk.
Llerar will tell you that his son went mad after Divayth Fyr kidnapped Arethan's daughter, Delyna, and believes that the return of Delyna just might cure Arethan's madness. If you've gone far enough into the main quest, you've probably encounters the recluse Divayth before, in the tower of Tel Fyr, in the islands off the East coast, Southwest of Sadrith Mora. You don't need to talk with Fyr (in the Upper Tower), though you can, as Delyna can be found downstairs behind a locked and trapped door (be careful of Fyr's daughters who are in the area). Escort Delyna to the tower entrance. Once there, she 
will talk to you and give you an amulet that you can show to Arethan. Travel to Milk and show Arethan the amulet and he will become slightly more sane and promise to stop demanding tribute.
Report back to Sarethi in Ald'ruhn to complete the quest and receive a noticeable increase in disposition with all Redoran Councillors. This is the last quest you receive from Sarethi.