Treasury of Scripture Knowledge
Summary
                            The sons of Judah; Er, and Onan, and Shelah: which three were born unto him of the daughter of Shua the Canaanitess. And Er, the firstborn of Judah, was evil in the sight of the LORD; and he slew him.                        
                    Bible References
Er, and
                                        1 Chronicles 9:5                                        from the Shilonites:
Asaiah the firstborn and his sons;
 
                                    
                                                                                                                                Asaiah the firstborn and his sons;
                                        Genesis 38:2                                        
                                                                                                                                There Judah saw the daughter of a Canaanite named Shua; he took her as a wife and slept with her. 
                                    
                                        Genesis 46:12                                        Judah’s sons: Er, Onan, Shelah, Perez, and Zerah; but Er and Onan died in the land of Canaan.
Perez’s sons: Hezron and Hamul. 
 
                                    
                                                                                                                                Perez’s sons:
                                        Numbers 26:19                                        Judah’s sons included Er and Onan, but they died in the land of Canaan.