And she gave birth to a son, and he gave him the name Er.
Referenced Verses
Gen 46:12 : 12 And the sons of Judah: Er and Onan and Shelah and Perez and Zerah: but Er and Onan had come to their death in the land of Canaan; and the sons of Perez were Hezron and Hamul.
Num 26:19 : 19 The sons of Judah, Er and Onan: and Er and Onan had come to their death in the land of Canaan.