The Markomen Order was originally the group of protectors of the Par'tha Expanse's noble House Larokon. Formed thousands of years ago on the planet Laerron, their primary goal was to prevent outsiders from attacking the House.
Two hundred years later, Viscountess Cleonna of Evaldor was married into the House. From Cleonna, the Order was turned into a cult of assassins. The order was nearly wiped out by House Kerraron, during the Cleansing of the Nine Houses. However, a few members survived in hiding.