Anton Miche was a Count of the Landsraad in 10,156 AG during Duke Leto Atreides I Trial by Forfeiture. The Trial dealt with Leto's alleged ordering of the destruction of a Bene Tleilaxu spacecraft while both were docked inside a Guild heighliner.
It had been surmised that Miche was susceptible to anti-Atreides, therefore Harkonnen bribery. The issue of Leto's innocence or guilt became a moot point when Leto's cousin, Crown Prince Shaddam Corrino IV, entered the Chamber. Shaddam then demanded that Leto be found innocent of the Tleilaxu accusations, to which the tribunal assented.