Ernest Sievernich (エルネスト・ジーヴァーニッヒ, Erunesuto Jīvānihhi?) was the adoptive father of Christof Sievernich and the former head of the Sievernich financial group - one of the most powerful in Germany - before his death in 1996. He was also one of the four founders (alongside Helmut Wolf, Petr Čapek, and Günther Gödelitz) of the right-wing extremist organization that sought to raise Johan Liebert as the new "Führer".
Christof was sold to Sievernich by Erich Klemperer, an East German food tradesman who had a sideline system of smuggling orphan children over the border to sell to childless westerns.
Not much is known about Sievernich. What little information is given about him is revealed through Eva Heinemann, who is shown to have done research on the Sievernichs, as well as Christof, who talks briefly about him.