This family originated from the fact that Toshimichi TOMINOKOJI who was originally a shodaibu (aristocrat lower than Kugyo) of the Kujo family, and was promoted to Jusanmi (Junior Third Rank) by insisting that his family was a branch family of the Nijo family.
元来は九条家の諸大夫だった富小路俊通が二条家の庶家を自称する形で従三位に昇ったことから始まる。