"Rabbi Shmuel bar Nachmeni say, When Avraham Avinu saw the great number of children he had through his second and final wife, Keturah [6 children total, after the passing of his first wife, Sarah Imeinu; [o]ne ancient source states that Hagar was already dead at this time (Yov'loth 19:13)], he knew that they would be harmful to Yitzchak and therefore, Avraham sent them off to the far eastern end of the world [with gifts].
What gifts [did he give them]? R. Jeremiah b. Abba say, 'This teaches that he imparted to them [the secrets of] the unhallowed [Martial] arts.'
"Asher's wife, Hadurah, is a granddaughter of Ever and a widow. By her first marriage Hadurah had a daughter Serah, whom Asher [younger brother of Gad, B'nei Zilpah] treated as affectionately as if she had been of his own flesh and blood, so that Torah commentary expounds on Serah as Asher's daughter ("Sefer ha-Yashar, Wayesheb"). According to the Book of Jubilees (xxxiv. 20), Asher's wife was named "Iyon" (probably , "dove")."
"They shall hasten like a bird from Mitzrayim and like a dove from the land of Ashur; and I will place them in their houses, says the L-rd" {Hoshea 11:11}.
"According to the midrashic Book of Jasher, Yissachar married Aridah, the younger daughter of Yobab, a son of Yoktan, eldest brother of Peleg, sons of Ever. Commentary describes the descendants of Yoktan and Peleg as "small and numerous."
One of Avraham and Keturah's six sons, Midian, synonymous with southern Jordan, was the forefather of Tzipporah, Moyshe Rabbeinu's Midianite wife.
One of Midian's five sons, Epher, is where Africa received its name according to Josephus. He also quotes Alexander Polyhistor (c. 100-40 b.c.e.) that this Epher conquered Libya and gave it his name, Africa (
Antiquities 1:15:1).
