In 620, Umako published Tenno Ki (Imperial History), Kokki (National History) and Omi Muraji Tomono Miyatsuko Kunino Miyatsuko Monoamariyaso tomo o Awasete Omitakara no Hongi (Records of Various Public Offices) with Prince Shotoku.
推古天皇28年（620年）聖徳太子と共に天皇記、国記、臣連伴造国造百八十部併公民等本記を記す。