Marchenir is an elven empire of the world Kriav.
The empire came about after a civil war in Gwildath. This conflict divided the empire in two, with those against the royalists joining the rebel leader Marchenir. The first government of this empire named after him was comprised of three groups of wizards. This magocracy government was called the Celedhroth. It focused on building an empire with a classless society, equal rights for Tungesti and others, and providing a defense against the royalist armies of Gwildath.
In one of the conflicts with Gwildath, the Celedhroth employed dark arts to summon fiendish help. This outside aid helped defeat the Gwildath, but also caused extensive harm and mayhem in the lands of the Marchenir. It took a decade to put down or drive out all the fiends running amok. The Celedhroth government lost out in the next election, replaced by a council of military leaders, savants, wizards, priests, and merchants. This republic government has on several occasions been unseated by magocracies, but none as notorious and reckless as the Celedhroth.
The centaurs of this empire, and for that matter all of Kriav, came about with the Cube Collapse. At the time, they were a nomadic tribe of Tungesti. When they were changed to what seemed like many as an abomination, they were driven away. In the Gwildath Civil War, the rebels under Marchenir allied with the centaurs. The centaurs proved to be immeasurably helpful as shock troops, messengers, and even transport. After Gwildath split in two, the centaurs were welcomed into the fledgling empire Marchenir.
Marchenir, like Gwildath, sends colonists to other realms and worlds. They only started doing this after they learned that Gwildath was sending "explorers" to other realms in search of relics and allies to use against them. In 2622 LE, they sent colonists to the world Bal-Kriav and in sector Fjorvir they founded the settlement Lúthil.