Arthur Dales was the sister of Special Agent Arthur Dales and Officer Arthur Dales. She and her brothers had a goldfish named "Arthur Dales." (TXF: "The Unnatural")

Nothing else is known about Ms. Dales. It is possible that former Officer Dales was joking or somehow speaking metaphorically when he told Fox Mulder his sister was named Arthur.
Arthur Dales
Special Agent Arthur Dales   •   Officer Arthur Dales   •   Ms. Arthur Dales   •   Goldfish Arthur Dales

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