Jubilees 4:10
9 And Cain took Âwân his sister to be his wife and she bare him Enoch at the close of the fourth jubilee. [190-196 A.M.] And in the first year of the first week of the fifth jubilee, [197 A.M.] houses were built on the earth, and Cain built a city, and called its name after the name of his son Enoch. 10 And Adam knew Eve his wife and she bare yet nine sons. 11 And in the fifth week of the fifth jubilee [225-31 A.M.] Seth took Azûrâ his sister to be his wife, and in the fourth (year of the sixth week) [235 A.M.] she bare him Enos.
Pseudo Philo Biblical Antiquities 1:2
1 The beginning of the world. Adam begat three sons and one daughter, Cain, Noaba, Abel and Seth. 2 And Adam lived after he begat Seth 700 years, and begat 12 sons and 8 daughters. 3 And these are the names of the males: Eliseel, Suris, Elamiel, Brabal, Naat, Zarama, Zasam, Maathal, and Anath. 4 And these are his daughters: Phua, Iectas, Arebica, Sifa, Tecia, Saba, Asin.
Notes and References
"... Jubilees 4:10 ... Eve subsequently gave birth to nine more children: This is not mentioned in Genesis, but Adam and Eve’s additional children do figure elsewhere in Second Temple writings: according to Pseudo-Philo’s Biblical Antiquities 1:2, they had “twelve sons and eight daughters” after the birth of Seth ..."
Kugel, James L. A Walk through Jubilees: Studies in the Book of Jubilees and the World of Its Creation (p. 46) Brill, 2012