On her way back from sankan-seibatsu (the conquest of three countries in old Korea), Empress Jingu gave birth to him at Umi (Umi Town, Kasuya County, Fukuoka Prefecture).
神功皇后の三韓征伐の帰途に宇瀰（うみ、福岡県糟屋郡宇美町）で生まれたとされる。