What does 1 Chronicles 9:4 mean?

One of them was Uthai, son of Ammihud, son of Omri, son of Imri, son of Bani, from the family of Perez, who was a descendant of Judah. 1 Chronicles 9:4 - Modern Text Bible

(This verse gives a specific example of someone from Judah's line who returned, tracing his ancestry back to Perez, a key figure in Judah's family.)