Yoshinaka nicknamed this imperial prince 'Prince Hokuriku,' and when he triumphantly marched into the capital a few years later, he planned to put him forward as a potential replacement for Emperor Antoku, who had fled with the Taira to the west, on the imperial throne, but was forced to abandon the idea by Cloistered Emperor Goshirakawa, who had been displeased by prince Mochihito's usurpation of the title of 'imperial prince' when he issued his command.
義仲はその皇子を「北陸宮」と名付けて、上洛時にこれを押し立てて平氏とともに西走した安徳天皇に代わって皇位に就けようと画策するが、かつて以仁王が勝手に親王を称して令旨を発行したことを不快に思っていた後白河法皇によって退けられたという。