Iantha Aurix

Iantha Aurix was a Palavenian concubine and the mother of the Aurelion Imperator's illegitimate twins, Flavia and Orian Aurix. Following the birth of her children, Aurelion had Iantha and the twins relocated to one of his personal holdings in Cipritine, enabling her to raise them in comfort and relative privacy, while ensuring that she would never have to resort to sex work again. Aurelion's wife, Septonia Halabrian, despised Iantha and her children, and did everything in her power to keep them out of Aurelion's life. Iantha became close with Aurelion's other illegitimate child, Rea, whom would assist her with raising Flavia and Orian. She came to view Rea as an adoptive daughter of sorts, as Rea's mother had died in childbirth and her grandfather had been executed for treason.
In the years following Septonia's death, Aurelion chose to officially acknowledge Flavia and Orian as his offspring by granting them the title of Aurix (meaning "Golden Children"), as he had already done with their half-sister, Rea. this public recognition of her children raised Iantha far above her station. 
While she had initially used Aurelion as a means of survival, Iantha later came view him as a friend and greatly admired him for breaking with centuries of aloof imperial tradition. Aurelion would often confide in her about his anxieties regarding being a good father to his children. Iantha was also one of a handful of people who was privy to his relationship with Markus Abrudas. Aurelion always ensured that she was well cared for, even after his death; in his will, he bequeathed to her all the holdings he had previously housed her and their children in, and enough of his personal wealth to support her for the rest of her life. 
Iantha would live to see her son ascend the imperial throne as Primarch of Palaven, after which she enjoyed the privileged position of Mater Primarchae Palavinis ("Mother of the Primarch of Palaven"). She actively encouraged Orian's zealous beliefs regarding his late father's legacy, believing that he was the instrument by which Aurelion's meritocratic philosophies would be spread. Orian rise from the bastard son of a concubine to ruler of the known universe was a point of pride for her and, in her mind, perfectly encapsulated the ethos of Aurelion's meritocracy.