John Gill Commentary 1 Chronicles 7:19

"And the sons of Shemida were Ahian, and Shechem, and Likhi, and Aniam." — 1 Chronicles 7:19 (ASV)

And the sons of Shemida
Another son of Gilead's sister, unless the same with Ishod; from him sprung the family of the Shemidaites, (Numbers 26:30).

were, Ahian, and Shechem, and Likhi, and Aniam;
from Shechem came the family of the Shethemites, as from Likhi, if he is the same with Helek, as probably he may be, was the family of the Helekites, (Numbers 26:30Numbers 26:31).