Here is a strange reference connected to Seth

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Pillars of the sons of Seth
The Pillars of the sons of Seth, according to the Antiquities of the Jews by Josephus, were two pillars created by the descendants of Seth and inscribed with many scientific discoveries and inventions, notably in astronomy. They were built by Seth's descendants based on Adam's prediction that the world would be destroyed at one time by fire and another time by global flood, in order to protect the discoveries and be remembered after the destruction. One was composed of brick, and the other of stone, so that if the pillar of brick should be destroyed, the pillar of stone would remain, both reporting the ancient discoveries, and informing men that a pillar of brick was also erected. Josephus reports that the pillar of stone remained in the land of Siriad in his day.

Historicity
William Whiston, a 17/18th century translator of the Antiquities, stated in a footnote that he believed Josephus mistook Seth for Sesostris, king of Egypt, the erector of the referenced pillar in Siriad. He argued that there was no way for any pillars of Seth to survive the deluge, because the deluge buried all such pillars and edificies far underground in the sediment of its waters.