Scott McGee was the son of John T. McGee of Ohio, and his English wife Ultima Clayton, a descendent of the 3rd Duke of Greystoke who had witnessed the Wold Newton Meteorite strike. Scott was the father of Travis McGee and Travis's ill-fated brother.

The McGee family are described by Philip José Farmer in Tarzan Alive and Doc Savage: His Apocalyptic Life, although it was later scholar Brad Mengel's article "Watching the Detectives, or The Sherlock Holmes Family Tree" that actually revealed Scott's baptismal name.

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