Honourum System

The Honourum System is a lightning-wracked feral star system in the galactic north of Ultima Segmentum, the Novamarines' seat at Fortress Novum. Honourum itself was torn off a Word Bearers garrison in the Heresy; Guilliman later parked a Second Founding Chapter on the same storm-world.

There is little else in the charted well. Novamarines still recruit from the tribes that live between lightning strikes, and later millennia have used Honourum as a northern watch-post rather than a civilised capital. The storms are the point: a Chapter that likes a hard home stayed here.

The Honourum System still matters as a Second Founding pin in Ultima, not as a forgotten feral world. Unofficial fan maps keep the Ultima parent and do not fold Honourum into Ultramar proper.