Since the note regarding Tsuneuji in "Sonpibunmyaku"(a text compiled in the fourteenth century that records the lineages of the aristocracy) mentions 'name, Kira,' it could be considered that the Tojokira clan of the early period first possessed the territory of Tojo when Tsuneuji became the family head; however, the truth is unknown.
『尊卑分脈』の経氏の注に「号吉良」と記されていることから、前期東条吉良氏は、経氏の代に初めて東条の地を領有したとも考えられるが、確証は得られていない。