Emperor Jinmu had already married Ahiratsuhime and had two children in Hyuga Province before his Tosei (eastern expedition); however, after conquering the Yamato region he sought to win over the local ruling families by marrying one of their daughters as his legitimate empress.
神武天皇は、東征以前の日向国ですでに吾平津姫を娶り子供も二人いたが、大和征服後、在地の豪族の娘を正妃とすることで、在地豪族を懐柔しようとした。