Charles Ellicott Commentary 1 Chronicles 23:10

"And the sons of Shimei: Jahath, Zina, and Jeush, and Beriah. These four were the sons of Shimei." — 1 Chronicles 23:10 (ASV)

And the sons of Shimei. —That is, of Shimei the “brother” of Laadan (1 Chronicles 23:7). The sons of Shimei formed four houses, but were reckoned as three, because the two last-named, Jeush and Beriah, were numerically weak, and therefore counted as a single house and class (1 Chronicles 23:11).

Zina. — 1 Chronicles 23:11 reads “Zizah” for this name, which is thus spelled quite differently in two consecutive verses. “Zizah” is probably right. (Compare 1 Chronicles 4:37; 2 Chronicles 11:20.) So the Septuagint and Vulgate; Syriac and Arabic read “Zabda.”