In the Hive Subrique section of the Book of Justice, there is mention that the Rogue Trader orbiting the planet could be related to the Krell family. I've been searching, but to no avail... Are they mentioned or referenced in any of FFG's publications? Has anyone heard of a Krell before?

Will the real mr. Krell please stand up?

Krell is the name of the Zanatovians' leader, who claims to possess the Legacy Charter.

See Book of Judgement, p.103.