Hadejia was once known as Biram, and is referred to as one of the "seven true Hausa states" (Hausa Bakwai), because it was ruled by the descendants of the Hausa mythological figure Bayajidda and his second wife, Daurama. By 1810, during the Fulani War, the Hausa rulers of the Hausa Bakwai had all been overcome by the Fulani. Hadejia Emirate itself had been founded two years earlier, in 1808, and lasted until 1991, when it was absorbed into Jigawa State.