The Trichotomic Founding

The Trichotomic Founding, or referred to as the "Third Founding" of the Imperial Marine Legions, also titled the Legiones Imperialis, occurred in the middling years of the 90th Millennium in the year M90.687 after the end of the Dark Ages of the long Dark and Terran Unification Wars that founded the Stellar Imperium upon Terra at the start of the Sol Reclamation Wars in M90.540.
The thirdborn Eight Imperial Marine Legions, along with the prior Primaris and Parousian Foundings were created from the Inheritance-Helix clusters of the 20 superhuman Luminarchs engineered by the Emperor of Mankind from His own genetic code in His gene-laboratories beneath the Imperial Palace on Terra in the Kilaminjanto (Kilamanjaro) Ranges.
In spite of the fact that the gestalt Luminarchs were still in their pre-embryonic stages, the Emperor still waged his Unification Wars of Terra and later the reclamation Wars of Sol—and to these ends He managed to forge complete and viable samples of each Luminarch's DNA—at least prior to their scattering and subsequent far-flung births.
The Emperor used the 13th through 20th iterations of these templates to create the third generation of eight Imperial Marine Legions by genetically enhancing initiates hailing from the Worlds of Sol with the Inheritance-Helix derived from the genomes of the third eight Luminarchs. The Imperial Marine Legions born of this process were tutored by their Cousins born in the Prior Foundings along with the ever-more scant Veterans of The I'cartes Regiments, now mostly made up of cybernetics and gristle, and were utilized to complete the Sol Reclamation Wars and then to initiate the Great Crusade to reunite all of Mankind's scattered colony worlds across the galaxy.
With each Luminarch the Emperor re-discovered during the course of the Great Crusade, He gave command of the Imperial Marine Legion created from their genetic material back to them. Each Luminarch then set up their Legion's headquarters on his/her own homeworld, from which they also recruited new Imperial Marines into the Legion.
== Trichotomic Founding Imperial Marine Legions ==
Legion Number	Legion Colors	Luminarch 	Legion Cognomen 	Homeworld
XIIIth 	 	Orestis Neritos 	The Warhounds of Anatelikós	[Anatelikós]
XIVth 	 	Sikuqtuq Tikaani Ilisaq	The Frostwind Hounds 	[Utuu'naq]
XVth 	 	Xann Vakosa 	Legio Corvorum Mortis 	[Astraeus]
XVIth 	 	Guillermo Acin Ricard 	The Errant Sons of Ademar 	[Ademar]
XVIIth 	 	Aesmedon Rinallis 	The Bulls Palatine 	[Kerivaltas]
XVIIIth 	 	Borakhutai Shogun 	The Astral Marauders 	[Lú VI]
XIXth 	 	Radenai Khan 	The Stormwrath Scions 	[Lú VI]
XXth 	 	Viscardi Ingral 	The Iohiran Kinship 	[Iohiri]