Emperor Chuai

A.k.a. Prince Tarashi Naka

Emperor Chûai was Jingû's "husband". He was divinely told to go to Korea to conquer, but wished to travel to Kyushu instead.

Angry, the kami that had ordered him struck him dead. Jingû succeeded him.

Sources

Aoki, Michiko Y. Ancient Myths and Early History of Japan. Pages 37-38.