Mírzá Mihdí (‎ 1848 – June 23, 1870) was the youngest child of Baháʼí Faith founder Baháʼu'lláh and his wife Ásíyih Khánum. He was given the title G͟husn-i-Athar ("Purest Branch" or "Purer Branch"). Early life He was born in Tehran with the given name of Mihdí in 1848. Since birth, he held the style of Mirza as the son of an aristocrat. His father was Bahá’u’lláh, son of a court minister Mírzá `Abbás Núrí. His mother, Ásíyih Khánum was the daughter of nobility from Mazandaran. He was named after his deceased paternal uncle, who Bahá’u’lláh had been close to. Mírzá Mihdí was four when his father was arrested, their home looted, and the family reduced to near poverty. At its worst, his mother was forced to feed the children flour to satiate their hunger. In 1852, Bahá’u’lláh was exiled to Baghdad but due to his ill-health, Mírzá Mihdí was left with relatives in Tehran. Returning to his family, 1860 - 1868 Mírzá Mihdí was reunited with his family in 1860 and grew very close to his father. He served Bahá’u’lláh as his secretary, transcribing letters on his behalf. Mírzá Mihdí accompanied Bahá’u’lláh in His successive exiles to Istanbul, Edirne, and, finally, to Acre, Israel. Bahá’u’lláh (who described his family as a tree) entitled Mírzá Mihdí as "The Purest Branch". Exile to Acre and death, 1868 In the summer of 1868, Bahá’u’lláh and his family were condemned to perpetual imprisonment in the penal-colony of Acre, Israel. The family was housed in a cluster of dilapidated cells. Mírzá Mihdí occupied a cell with his mother and his sister Bahíyyih Khánum. It was common practice for the prisoners to use the roof for exercise in the summer months. Mírzá Mihdí was pacing the roof reciting the Ode of the Dove (a prayer revealed by his father). Wrapped in prayer, he fell through the skylight in the roof of the prison onto a crate lying on the floor below. The family heard the crash and rushed to the scene to find Mihdí covered in blood. He was so badly injured that his clothes had to be torn from him. Prison guards allowed for a doctor to attend to him, but by that time the injuries were too severe. As he lay dying, Mírzá Mihdí told Bahá’u’lláh he wished that pilgrims (many of whom walked from Iran but were denied the chance to meet Bahá’u’lláh)