I Chronicles 2:3-4

The sons of Judah were Er, Onan, and Shelah. These three were born to him by the daughter of Shua, the Canaanitess. Er, the firstborn of Judah, was wicked in the sight of the LORD; so He killed him. And Tamar, his daughter-in-law, bore him Perez and Zerah. All the sons of Judah were five.