It was alternatively recorded as "宗我" in the "Sendai Kujihongi" (Ancient Japanese History): Lineage of the Mononobe and Soga clans, "Jogu Shotoku Hooteisetsu" (Biography of Shotoku Taishi), and "Nihon Sandai Jitsuroku" (Veritable Records of Three Reigns of Japan).
宗我『先代旧事本紀』天孫本紀、『上宮聖徳法王帝説』、『日本三代実録』