[5] According to some historians, Mubarak was born into a Sunni Muslim family in a village located in the eastern part of Noakhali.
[6] Mubarak found employment as a silahdar (armour-bearer) under Bahram Khan, the governor of Sonargaon appointed by Delhi's sultan Muhammad bin Tughluq.
After the death of Bahram Khan in 737 AH (1336-1337 AD), Mubarak rose to power and declared himself as independent ruler from his proclaimed capital in Sonargaon.
[2] His military initiatives included a successful naval action against Sultan Alauddin Ali Shah of Lakhnauti.
[7] Ikhtiyaruddin Ghazi Shah, who according to historian Jadunath Sarkar was most probably Fakhruddin's son, succeeded him and ruled the independent Sultanate from Sonargaon till 1352.