Hezron the son of Perez, was the grandson of Judah and brother of Hamul. He is thus the first cousin once removed of the other Hezron. This Hezron is mentioned in Genesis 46:12 as one of the 70 Israelites to move to Egypt with Jacob. He was the father of Jerahmeel, Ram and Caleb. Hezron appears in the genealogies at Ruth 4:18-19; 1 Chronicles 2:5, 9, 4:1; Matthew 1:3; and Luke 3:33.
In addition, The plain of Hezron is located in the south of Judah, (Joshua 15:3, 25).