Xer VIII's father was the father of Xer VIII and grandfather of Xim. In the historical play The Pirate Prince, Xer suggests that his father was unfaithful to his wife, and also suggests that he killed his own father for the infidelity.
Sources
Xim Week: The Despotica (Part II: The Pirate Prince) on Hyperspace (article) (content obsolete and backup link not available) (First mentioned)
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