Lev Tieron was The Chancellor of the Senatorum Imperialis at the time of the 13th Black Crusade. While not a High Lord, the position nonetheless made him extremely powerful and he gained significant influence over his eighty year tenure. During the 13th Black Crusade, Tieron was a key political player in pushing for the dissolution of the Edict of Restraint that kept the Adeptus Custodes bound to Terra.
During the Battle of Luna, Tieron was the first Adeptus Terra official to meet with the reborn Roboute Guilliman. After the Battle of Lion's Gate, he was made Guilliman's personal Remembrancer.[1a] Tieron's aid and occasional lover Anna-Murza Jek replaced Tieron as Imperial Chancellor. He ultimately did not follow Guilliman off Terra and into the Indomitus Crusade. Due to his poor physical condition he may not have survived the campaign. While remaining on Terra he aided his former acolyte Jek against the Hexarchy.[2a]
- 1: Watchers of the Throne: The Emperor's Legion (Novel), Tieron
- 1a: Chapter 26
- 2: Watchers of the Throne: The Regent's Shadow (Novel) Chapter 1
- 2a: Chapter 13