Sheikh Maz'al ibn Jabir (18~~ - 1897, styled Muaz us-Sultana) was the son of Sheikh Jabir al-Kaabi

Sheikh Jabir al-Kaabi

Sheikh Jabir al-Kaabi was the leader of the Bani Kaab Arab tribe and the Sheikh of Khorramshahr during the 19th century...

 and succeeded him as tribal leader of the Bani Kaab and Sheikh of Mohammerah

Khorramshahr

Khorramshahr is a city in and the capital of Khorramshahr County, Khuzestan Province, Iran. At the 2006 census, its population was 123,866, in 26,385 families.Khorramshahr is a port city located approximately north of Abadan...

 upon his father's death. This was confirmed by an Imperial Qajar

Qajar dynasty

The Qajar dynasty was an Iranian royal family of Turkic descent who ruled Persia from 1785 to 1925....

 farman (executive order). Some accounts state that he was assassinated by his younger brother, Khaz'al Khan

Khaz'al Khan

Sheikh Khaz'al ibn Jabir Al kaabi, GCIE, KCSI , Muaz us-Sultana, and Sardar-e-Aqdas , was the ruler of the semi-autonomous Sheikhdom of "Mohammerah")....

, while others state that this was done by a palace guard under orders from Khaz'al.