Under Oath

Fisrt, after you've talked to Prince Trion after the first AF quest (the feet), head to Castle Zvhal Baileys and seek out a coffer key. You can obtain these by fighting Ahriman, Abyssal Demon, Arch Demon, Blood Demon, Demon's Elemental, and Doom Demon.

http://www.teamavengers.org/ffxiclopedia/index.php/Image:Castle_Zvahl_Bailes_03.gif

Above is a map on this site where the coffer chest locations are. Baisically, all the coffer drop mobs are in the four corners and the tunnels leading to the four corners. To get to these corners, you need to drop down into 4 different holes. But, the northwest hole will only lead to the northwest corner, and once you drop, you need to make your way back up to get to a different hole. When you find a coffer chest, you will get a KEY ITEM. The item is like some sort of painting pen or something like that (I forgot the correct name).

Once you got the item, head back to Southern San'doria. Talk to Vemalpeau at M-7 (he's in a house). After you talk to him, go upstairs of the house, and imidietly to your left, there 3 spots that can be examined. First, examine the spot with the pen ink thingy. The key item you got will "rest in the spot". Then, examine the painting on the wall above the first spot. You need to "look behind the painting" and then "open a letter found behind the painting".

Ok, now you're ready for Davoi. First, you need a party of like 20 people of level 55+. But for me, I was able to get 4 level 70+ people's help, plus a 60 DRK friend, 3 other level 55+ players, and a 55 WHM friend (yes, WHM is needed even if you had 4 people level 70+). The area you need to go to is in G-9. There, you'll find a well. The person who needs this quest is the one who will touch the well. But, I do suggest that you clear the area of orcs, sine they will link to the 2 NMs. That's right, there's 2. One is a RNG, and the other is a PLD. THe smaller one is the ranger, and i suggest that you kill that one first, while someone tanks or occupies the PLD. After you kill them both, ONLY 1 ITEM WILL DROP!. So if you have more then one PLD who needs the quest, you need to kill them both again and again.

Lot on the item, and whoever gets it MUST TRADE IT WITH THE WELL! Select "dip letter into well" or something like that. A small cut scene will occur. No video or anything. All that will happen is the letter will be typed into the log window. You will also get a letter as a key item. After that, head to Northern San'doria, and talk to the kid again (forgot the name), the one that you did the sword and feet AF with. Nothing big will happen.

Then, get on a chocobo, and head to Jugner Forest. In there, you need to go to a small pond in the north west corner. NOT THE BIG ASS ONE AT THE NORTH, BUT THE MUCH SMALLER ONE SOUTH WEST OF THE BIG ASS LAKE. Also, don't get off of your chocobo. You won't need to. Once you get to the endge of the pond, a cut scene will occur. It will involve the kid's father killing someone else.

After that, head back to Northern San'doria and talk to Prince Trion. Another cut scene will occur, and at the end, you will recieve the Gallant Surrcoat. Congratulations! :D