According to Samandar, who was one of the early believers of Qazvin (manuscript, p. 15), Tahirih's sister, Mardiyyih, was the wife of Mirza Muhammad-'Ali, who was one of the Letters of the Living, and who suffered martyrdom at Shaykh Tabarsi. Mardiyyih appears to have recognised and embraced the Message of the Bab (p. 5). Mirza Muhammad-'Ali was the son of Haji Mulla Abdu'l-Vahhab, to whom the Bab addressed a Tablet while in the neighbourhood of Qazvin.