Q. I heard today in a Shiur that Noach had actually four children. Could that be true?

A. Abarbanel (Bereishis 9: 18) mentions that he found in secular history books that claim Noach had a fourth son born to him after the Mabul and his name was Yuniku.

Abarbanel also writes that since there is no mention of this fourth son in the Torah and also in the secular books there is no mention of descendants of this son therefore there is no need to believe this to be true.

Seder Hadoros from Shalsheles Hakabalah that there was a fourt son who was rejected by his three brothers and joined Nimrod as his advisor. (from a recent Emailim BaTorah).

There are various traditions in post-biblical and Talmudic sources claiming that Noach had children other than Shem, Ham, and Yophes who were the ones born before the Deluge.

Rabbi A. Bartfeld as revised by, Horav Dovid Pam, Horav Aharon Miller, Horav Chanoch Ehrentreu and Horav Kalman Ochs Shlit’a