Knights Unyielding

Knights Unyielding
Unknown
Battle Cry Unknown
Founding Unknown
Successors of Unknown
Chapter Master Unknown
Primarch Unknown
Homeworld Unknown
Strength Unknown
Specialty Unknown
Allegiance Imperium
Colours Unknown

A Space Marine Chapter created for the Astartes Praeses position. You'd think the Imperium would have better records for a force tasked with something as important as guarding the doorway to hell. Supposedly they have very ornate armor and use a lot of purity seals. So an "official" version of these guys. Oh well, just another inspiration for the best Space Marine Chapter. From the name, they're probably Dorn's kids (stubborness, knights, like Astral Knights, Black Templars, etc.). The ornate armor and purity seals sounds like it would help bolster morale among allies. Each Marine a living symbol of the Emperor's glory and presence with his blinged out suit and fluttering signs of valor as he stubbornly murderizes the fuck out of everything stupid enough to cross his path.

Chapters of the Adeptus Astartes
First Founding (M29): Blood Angels - Dark Angels - Imperial Fists - Iron Hands - Raven Guard
Salamanders - Space Wolves - Ultramarines - White Scars
Second Founding (021.M31): Angels of Absolution - Angels Encarmine - Angels Porphyr - Angels of Redemption
Angels Sanguine - Angels of Vengeance - Angels Vermillion - Aurora Chapter - Black Consuls
Black Guard - Black Templars - Blood Drinkers - Brazen Claws - Crimson Fists - Destroyers
Doom Eagles - Eagle Warriors - Excoriators - Fists Exemplar - Flesh Tearers
Genesis Chapter - Inceptors - Iron Snakes - Libators - Lions Sable - Marauders - Mortifactors
Nemesis - Novamarines - Obsidian Glaives - Patriarchs of Ulixis - Praetors of Orpheus
Rampagers - Raptors - Red Talons - Revilers - Silver Eagles - Silver Skulls - Soul Drinkers
Storm Lords - White Consuls - Wolf Brothers
Third to Twelfth Founding
(M32-M35):
Astral Claws - Charnel Guard - Dark Paladins - Executioners - Flesh Eaters - Halo Brethren
Howling Griffons - Iron Knights - Mantis Warriors - Marines Malevolent - Night Swords
Sable Swords (initial) - Scythes of the Emperor - Space Sharks - Sons of Guilliman
Thirteenth Founding (M35): Death Spectres - Exorcists
Fourteenth to Twentieth Founding: Angels of Fire - Celebrants
Twenty-First Founding
(991.M35):
Black Dragons - Blood Gorgons - Fire Hawks
Flame Falcons - Lamenters - Minotaurs - Sons of Antaeus
Twenty-Second to
Twenty-Sixth Founding (M35-M41):
Angels of Vigilance - Celestial Lions - Dark Hunters - Disciples of Caliban - Emperor's Spears
Fire Angels - Imperial Harbingers - Iron Lords - Knights of the Raven - Marines Errant
Mentors - Fire Claws/Relictors - Star Phantoms - Subjugators
Ultima Founding
(999.M41):
Angels of Defiance - Blades of Vengeance - Castellans of the Rift - Fulminators
Knights Cerulean - Knights of the Chalice - Knights of Thunder - Necropolis Hawks
Nemesors - Praetors of Ultramar - Rift Stalkers - Silver Drakes - Silver Templars
Sons of the Phoenix - Storm Reapers - Umbral Knights - Unnumbered Sons
Valiant Blades - Void Tridents - Wolfspear
Unknown Founding: Absolvers - Accipiters - Adulators - Angel Guard - Angels Eradicant - Astral Knights
Blood Ravens - Blood Swords - Brothers Penitent - Crimson Castellans - Crimson Consuls
Crimson Scythes - Dark Hands - Dark Sons - Death Eagles - Fire Lords - Guardians of the Covenant
Graven Spectres - Hammers of Dorn - Harbingers - Hawk Lords - Invaders - Iron Talons - Jade Dragons
Knights of Blood - Knights Unyielding - Marines Exemplar - Night Watch - Rainbow Warriors
Reclaimers - Red Hunters - Red Scorpions - Sable Swords (refounded) - Solar Hawks
Sons of Orar - Star Dragons - Storm Giants - Storm Wardens - Valedictors - Viper Legion - Vorpal Swords
Unsanctioned Founding: Consecrators - Sons of Medusa - Steel Confessors
Others: Adeptus Custodes - Astartes Praeses - Deathwatch - Grey Knights