Genesis 41:50-52
41:50 Two sons were born to Joseph before the famine came. Asenath daughter of Potiphera, priest of On, was their mother.
41:51 Joseph named the firstborn Manasseh, saying, “Certainly God has made me forget all my trouble and all my father’s house.”
41:52 He named the second child Ephraim, saying, “Certainly God has made me fruitful in the land of my suffering.”