Iorwerth Clan

The lorwerth Clan is one of the eight elven clans that once inhabited Prifddinas. At the End of the God Wars, Seren, the goddess of the elves, was forced to leave Gielinor. The Cadarn Clan departured from Tirannwn in the Fourth Age to seek peace with the Gnomes, Humans and Ogres at the other side of the mountains. (the current Kandarin)

With most of the military gone, the Iorwerth Clan, led by Lord Iorwerth, conquered Prifddinas. Many elves died and the remaining clans had to flee into Isafdar. They are still hiding in camps like Lletya.

Today
Warning: the following section contains spoilers of some quests

During the Regicide quest, the player helps the Iowerth Clan to kill King Tyras. The player uncovers the plan to ressurect the Dark Lord and to conquer Camelot.

In Mourning's Ends, the player discovers that the Mourners are actually elves from Prifddinas who want to enter the Temple of Light.

The 8 Elven clans

 * Cadarn Clan
 * Iorwerth Clan
 * Ithell Clan
 * unknown
 * unknown
 * unknown
 * unknown
 * unknown

Trivia

 * Iowerth is Welsh for 'Great'