The name Genkuro comes from a legend that when MINAMOTO no Yoshitune had a battle with his older-brother MINAMOTO no Yoritomo, Yoshitune was helped by the Inari (Fox messenger) many times, so Yoshitune named this Inari Genkuro (meaning MINAMOTO the 9th).
源義経が兄源頼朝との戦に際し、義経は幾度もこの稲荷に助けられ、この稲荷に源九郎の名を贈ったという伝説が、社名の由来となっている。