Oromea

Strong Mirdain clan that entered the fray right at the launch of DarkFall. The clan leader was Dorundain Dunedhel.
They were between the first 10 clans to claim a city, residing in the Mirdain city Tughri, and were able to build it up quickly. Thus they were the first clan to build a guard tower, which at the time bugged out and hit everyone, including themselves. 
In April Oromea chose to become part of the Dawn alliance, and as such were a subsidiary to DUSK alliance but in reality maybe the strongest clan of the whole coalition.
They were invited into the Hyperion Alliance with the outbreak of World War I, but refused. Instead they were fighting Shadowbane Alliance through whole of WWI, together with their loyal friends in Vindicators (DUSK). 
At the end of WWI there was a large siege on Tughri, which again(?) belonged to Oromea. The fight included SBA + SUN + TheMercs / Rainbow Ninjas + former Hyperion guilds, sieging Tughri. Against DUSK/DAWN + leftovers of Coalition of the Chillin coming to assist. In the end Tughri stayed with Oromea.
For people living in the West side of the world, they might also have run into the roleplaying Mirdain clan associated with Oromea, Kingdom of Eleador.
Flysfree(?) took control of the oromea after WWI. (before NA1 started up).
Some of her noticible commanders are: Azura Twilight and Shalille.
(summary adapted from original wiki)