Attempts to find any reliably sourced information about this person have failed so far, and I propose that he be moved from the "Uncertain Existence" category to "Disproved Existence."
As a person who never existed, he will be disconnected from any parents, spouses, and children. Notation of these relationships, and links to them, will be provided in the biographical narrative under research notes; if new facts come to light, he can always be re-connected to the global family tree in accordance with the new facts.
If anyone can find some facts about this person, it will be most appreciated. It won't bring him back to life, but it will bring him back to having lived once!