He became the successor of the Toki clan, a local ruling family that belongs to the Mino-Genji (Minamoto clan) and, under the Taira clan government, assumed the role of Kebiishi Saemon no Jo (third-ranked officer with judicial and police powers in the Left Division of Outer Palace Guards) as a Kyoto-residing samurai belonging to the Minamoto clan.
美濃源氏の豪族・土岐氏の惣領となり、平氏政権下においても源氏の流れを汲む在京の武者として検非違使、左衛門尉を務めた。