His father was KOREMUNE no Naomoto who wrote "Ryonoshuge" (Commentaries on the civil statutes), and KOREMUNE no Masasuke who wrote "Seiji Yoryaku" (examples of the politics in the Heian period) was his grandson.
父は『令集解』の著者惟宗直本、孫は『政事要略』の著者惟宗允亮。