Jamal ul-Azam, also spelled Jamalul Azam, was the sultan of Sulu from 1862 to 1881. He was infamous for his maintenance of extensive contracts with British and German traders. These were done to count
Gustav Overbeck, from 1867 Gustav von Overbeck, from 1873 Freiherr von Overbeck, from 1877 Maharaja of Sabah and Rajah of Gaya and Sandakan, was a German businessman, adventurer and diplomat.
Dent & Co. in British Hong Kong, 1858.
The first concession treaty was signed by Sultan Abdul Momin of Brunei on 29 December 1877
The second concession treaty was signed by Sultan Jamal ul-Azam of Sulu on 22 January 1878