Ianus was born in 1E 386 as the third and final child of Lord and Lady Faleria, with his mother dying in childbirth. His father was an Imperial and his mother was an Ayleid, though Ianus had mostly elven traits. As such, his parents never allowed him to go outside Fort Faleria as the Alessian Empire would banish or execute him due to the First Pogrom.
After becoming an adult, Ianus became discontent with being isolated in his father's underground estate, and managed to find a way to easily get in and out of the fort. He fell in love with a merchant's daughter, and fathered a son with her named Maxivian Faleria. The woman's parents were horrified at Maxivian's elvish traits, and forced her to confess that Ianus was the child's father. In order to keep his family a secret from the Empire, Nunex Faleria hid his grandson with Ianus in the fort.
Within days, the Alessian Army was at the gate of Fort Faleria, seeking to arrest Nunex for his crimes of treason after discovering his elvish children. On the 19th Sun's Dawn, 1E 421, Ianus went with his family to speak to their father, just after he had finished performing a dangerous ritual to wipe out the Alessian Army. Ianus put his hand on his father's shoulder, but it was too late for Lord Faleria to cancel the ritual, and the darkness he summoned inadvertently killed Ianus and Maxivian. Lord Faleria buried him with his sister Lucina on the surface, where he never allowed his children to go, writing "Boundless Eternity Awaits Us" on his epitaph.
- The Elder Scrolls Online: Dark Brotherhood (Grave only)