Their first son died in infancy. The second, Araskin, was a clubfooted, simple-minded 2-meters tall giant and last, Vladimir Harkonnen.
Gunseng did not acknowledge as his natural son, though he never denied it publicly. Muertana explained to Araskin that his condition was due to the genetic shortcomings of Gunseng, whom she loathed and also reared the ostensible na-Baron herself, poisoning his mind against his father.
Gunseng's preference for Vladimir cost him his life: at a state banquet, Araskin murdered him and attacked Vladimir. That night, Muertana was strangled by Vladimir.