These were Gilead’s descendants:
the Iezerite clan from Iezer;
the Helekite clan from Helek;

So the allotment was for the rest of Manasseh’s descendants by their clans, for the sons of Abiezer, Helek, Asriel, Shechem, Hepher, and Shemida. These are the male descendants of Manasseh son of Joseph, by their clans.