Jafar bin Mansur al-Yaman
Exact dates are not known for him
Texts for Jafar bin Mansur al-Yaman
To write about the persons who have played important roles in shaping the course of Ismaili History is an immensely difficult task for a historian or a biographer. lbn Hawshab is also such a personage whose antecedents and career are barely discernible through the misty veil hung by the sectarian prejudice of his contemporary annalists or bigotry of latter historians. Most of the Muslim historians appear to have deliberately ignored him or suppressed facts about his life and career.
After the acquisition of power by the Ismailis in Yaman, the work of propagating Ismaili faith was performed by Da'is, who collected a great number of followers. And in this field arose a brave and courageous man, Ja'far-bin-Mansur-al-Yaman in 4th Hijri, who was given exclusively the charge of the central Da'wa organisation and was appointed chief da'i or Bab-ul-Abwab for which a separate department was constituted apart from the administrative one which was getting more complicated day by day.