Written by Josephus in circa 94. It recounts the history of the world from a Jewish perspective for an ostensibly Greek and Roman audience.
(Origin of the Bible handout by my small group leader, February 8, 2023. Summarized from Wikipedia. Page 4.)
In this book's 6th volume, he claims King Nahash was slain during the battle in 1 Samuel 11, casting doubt that the King Nahash that dealt loyally with King David (2 Samuel 10:2) was the same man.
(Antiquities of the Jews - Book VI: Containing the Interval of 32 Years. [From the Death of Eli, to the death of Saul.] by Josephus, Volume 6, Chapter 5, Section 3 @ https://penelope.uchicago.edu/josephus/ant-6.html, accessed June 9, 2023)