'Newly compiled record of clans'. Also known as Shoji-roku. The oldest extant copy is late Kamakura (14th century) but the original was brought out in 814 or 815. It records the history of ancient clans, classifying them into those descended from kami, those descended from emperors, and families which originally came to Japan from China and Korea. It thereby supplements information from the Kojiki, Nihongi etc. on ancient Japanese culture and the kami.
A Popular Dictionary of Shinto. Brian Bocking.