Ko'iron has a powerful female line, and in contrast to the other Patriarchal Noble Houses is led by a series of Matriarchs descended from the maternal line. Far from the most powerful Noble House, it maintains its position in the Spire from the ownership of several ramshackle Hive City manufactoria districts and a few choice off-world charters. Possibly as a result, many well-known Ko’irons are famous outside the House only for their political marriages to other Houses, and it is fitting that a gambling game is named after it: Ko’iron Six Card.
Nearly ten years ago House Delaque lost the lucrative Ko'iron Contract, severed all contact with the noble house on the sundering of this ancient deal and effectively stranding their agent Krelyn Delaque who had taken an oath to serve the Noble House while the Delaque-Ko'iron Contract was in effect.
- Hredriea, an old, long dead matriarch of House Ko'iron, whose statue stands outside the Matriarch's Shrine
- Princess Gwentria, the maternal granddaughter of Hredriea and current matriarch of House Ko'iron
- Prince Jurod the Humane, elder brother of Princess Gwentria
- Lady Brassis Diene Ko'iron, daughter of Lord Hagen Orlock, current Lady Ko'iron
- Count Marneus Ko'iron, first son of Lord Ko'iron, betrothed to D'onne Ulanti
- Count Julius Ko'iron, brother of Count Marneus and current heir of House Ko'iron
- Published simultaneously, Survival Instinct (Novel) and Salvation (Novel) happen to contain contradictory details of the leadership of House Ko'iron.
- Survival Instinct is based around "Mad" D'onne Ulanti's brush with her past, when she had been betrothed to Count Marneus Ko'iron, the then-heir of Ko'iron, going into a little detail on the House.[Needs Citation]
- Salvation is based inside House Ko'iron and on Curator Zefer Tyranus's quest for the Noble House in the Underhive. It concentrates on the House in much more detail.[Needs Citation]
- Neither novel uses the conventional title "Lord" for the leader of the House (which is only matched by the House Orlock history's mention of "Lady Ko'iron" (Brassis Diene Ko'iron), published in 2003).
- 1: Necromunda: Sourcebook, pgs. 8–10
- 2: Salvation (Novel), [Needs Citation]
- 3: Survival Instinct (Novel), [Needs Citation]
- 4: Necromunda: Outlanders Rulebook, pg. 78
- 5: "House of Iron", Necromunda Magazine vol 2, 1, pg. 28
- 6: Junktion (Novel), [Needs Citation]
- Necromunda: Underhive, pgs. 60–62, 63, 68
|Helmawr ◦ Catallus • Greim • Ko’iron • Ran Lo • Ty • Ulanti|
Cawdor • Delaque • Escher • Goliath • Orlock • Van Saar ◦ Aranthus