Mírzá Mihdí was the youngest child of Baháʼí Faith founder Baháʼu'lláh and his wife Ásíyih Khánum. He was given the title G͟husn-i-Athar.

Baháʼu'lláh was the founder of the Baháʼí Faith. He was born to an aristocratic family in Persia and was exiled due to his adherence to the messianic Bábí Faith. In 1863, in Iraq, he first announced his claim to a revelation from God and spent the rest of his life in further imprisonment in the Ottoman Empire. His teachings revolved around the principles of unity and religious renewal, ranging from moral and spiritual progress to world governance.