they were married [to men] of the tribe of Manasse of the sons of Joseph; and their inheritance was attached to the tribe of their father's family.
WEB
Numbers 36:12
They were married into the families of the sons of Manasseh the son of Joseph. Their inheritance remained in the tribe of the family of their father.
Parallel Translations
they were married [to men] of the tribe of Manasse of the sons of Joseph; and their inheritance was attached to the tribe of their father's family.
And they were married into the families of the sons of Manasseh the son of Joseph, and their inheritance remained in the tribe of the family of their father.