Shua was a Canaanite man who was the father of Judah's wife. Through his daughter, he became the father-in-law of Judah, Jacob's son. He is mentioned in connection with Judah's marriage and family history in Genesis.
Judah saw the daughter of the Canaanite man Shua and took her as his wife. This marriage took place when Judah had left his brothers and settled near a man in Adullam.
12After a long time Judah's wife, the daughter of Shua, died. When Judah had finished mourning, he went up to Timnah to the men shearing his sheep, together with his friend Hirah the Adullamite.
3The sons of Judah: Er, Onan, and Shelah. These three were born to him by Bath-shua the Canaanite. Er, Judah's firstborn, was evil in the LORD's sight, and the LORD put him to death.