Hazrat Mowlana Islamshah reigned as Imam for 56 years from A.H. 771 to 827. His complete name was Sayyed Ahmed Islamshah. Pir Sadardin and Pir Hasan Kabirdin famously addressed him as Sri Islamshah. His mother's name was Khalifa Bibi. in "Gulzar-e-Shamsh" it is said that Pir Sadardin was the Khalifa and Pir of Imam Ahmed Islamshah. Hazrat Imam Islamshah lived in Shaher-e-Babak and Kahek in Iran.

Our 29th Imam Kassam Shah ascended to the Masnad of Imamat in 710 A.H. At that time he lived in Azerbaijan district of Iran. He was the second Imam to celebrate his Diamond Jubilee on the throne of Imamat.. He had two younger brothers Hazrat Mominshah and Hazrat Kiyashah who were spreading the Dawa of the Ismailis. The Holy Pir at this time was Pir Shamsh. Imam Kassam Shah was also known as Nar Kassam Shah.

Our 28th Imam Shamshuddin Muhammad was secretly sent away by his father Imam Rukhnuddin Khurshah to the Azerbaijan district of Persia. This was during the time of the Mongol invasions. Imam Shamshuddin Muhammad lived as a poet with his family. During this time Hazrat Shamsh Tabriz who was the son of Imam Alauddin Muhammad also lived and performed great miracles through his powerful spiritual strength.