It was described in the entry for July 4, 658 of "Nihonshoki" (Chronicles of Japan) that many emishi (people living in the northern part of Japan at that time) came to the capital and were given official ranks and gifts.
『日本書紀』斉明天皇4年（658年）7月4日条に、蝦夷が多人数で都に来て位と物を授かったことが記されている。