"The path to greatness is often paved with blood and sacrifice, and as the Duke of the United Marches of Eileaniar and Eileaniòn, I will not shy away from either. My actions may seem cruel, but they are necessary to keep our realm strong and prosperous, and while the people of Caorran may not always understand my methods, they will come to appreciate the results." - Duke Loghain
Previously known as the Couslands of Eileaniar, it was founded by William Cousland as a cadet branch of House Cousland, after he grew in power following the annexation of the Southern Caorrani Island for Gallaran.
He split the island into two Counties: Eileaniar and Eileaniòn. He took the eastern County for himself, and the western side was awarded to the Forthgards.
After the betrayal of Michael Forthgard and his family, Eileaniòn was granted to Eileen Mac Mairtain.
Following William's death, his son Loghain Eilean inherited Eileaniar and invaded the twin County. He argued that only an unified island would be able to protect its metal deposits from foreign threats, and that the island deserved recognition from the Crown as one of the Kingdom's greatest assets and shouldn't be subjected to another Duchy.
After months of strife and battles, and using roguish methods of cloak and dagger, Loghain got what he so desperately wanted. King Cailean the Undying, in an effort to avoid further bloodshed, named him the Duke of The United Counties of Eileaniar and Eileaniòn, with the promise that Loghain would swear his undying loyalty to the Crown.
Being one of the best military minds of Caorran, proved by his successful campaign to unite both Counties, Duke Loghain was appointed as the Commander of the Royal Army.
Furthermore, following his meteoric ascension to power, as the Head of the House, he changed its name to House Eilean, adopting a new name based on his island to carve out his own Dinasty.