The Six Confederated Principalities of the Outer Territories, more commonly referred to as simply the Six Principalities, was a confederation of six principalities (realms controlled by a prince, acting as monarch) lying on the edge of Royal Urilian Space after 1488. The six separate principalities, though technically ruled by their own different heads of state, were allied through common defense and trade, primarily against any incursions from the Kingdom of Urilia. The original six princes are as follows: