user: Please answer the following question: Facts:   - title: sultan of johor    - mother: sultanah ungku tun aminah binti ungku ahmad    - predecessor: ahmad shah of pahang sultan ismail      - birth date: 8 april 1932    - issue: 10 , including : 1 . tunku kamariah aminah maimunah iskandariah children 2 . tunku besar zabedah aminah maimunah iskandariah 3 . -lrb- tunku ibrahim ismail 4 . tunku azizah aminah maimunah iskandariah 2 5 . tunku mariam zaharah 6 . tunku norani fatimah sons 7 . tunku maimunah ismailiah 8 . tunku abdul majid and 9 . tunku muna najiah 10 . tunku aminah kalsom 8 masera marian zahira iskandariah daughters -rrb-    - anthem: lagu bangsa johor    - succession: yang di-pertuan agong of malaysia sultan of johor    - reign: 26 1981 -- 22 january 2010 april 1984 -- 25 april 1989 11 may    - spouse: tunku binti abdullah -lrb- m. 1956-1962 -rrb- puan zanariah -lrb- m. 1961-2010 -rrb- josephine trevorrow/kalsom    - death date: 22 january 2010    - father: sultan ismail ibni al-marhum sultan ibrahim al-masyhur    - name: iskandar    - death place: puteri malaysia specialist hospital , johor bahru , johor ,    - birth place: istana malay states , british malaya semayam , johor bahru , johor , unfederated    - coronation: 15 november 1984    - successor: azlan shah of perak sultan ibrahim ismail    - image: iskandar2006cropped.jpg    - religion: sunni islam   Based on these bullet points, write a short biography describing the life of iskandar of johor .
A:

assistant: al-mutawakkil alallah sultan iskandar ibni almarhum sultan ismail al-khalidi -lrb- 8 april 1932 -- 22 january 2010 -rrb- he was the 24th sultan of johor and the 4th sultan of modern johor .he succeeded his father , sultan ismail , upon the former 's death in 10 may 1981 .and was the eighth yang di-pertuan agong -lrb- malay for paramount chieftain , supreme king or high king -rrb- of malaysia , from 26 april 1984 to 25 april 1989 .sultan iskandar reign lasted for almost 29 years until his death in january 2010 , upon which he was succeeded by his oldest son , sultan ibrahim ismail .as was the case with his grandfather , sultan ibrahim , sultan iskandar 's independent mindset resulted in strained relations with the malaysian federal government on numerous occasions .this was more so during his days as the yang di-pertuan agong , whereby a number of notable public incidents involved sultan iskandar .nevertheless , sultan iskandar was reputed to show great concern to his subjects , and was held in high esteem by many of his subjects -- particularly the malays and orang aslis .sultan iskandar is reputed to have been a staunch disciplinarian , with willingness to occasionally voice personal opinions on governmental issues .on the personal side , subjects who have personally approached the sultan in his later years described him as a person with a warm and generous personality .however , past critics had also argued that sultan iskandar was a person with a turbulent temper .these claims were made by citing records of past notorious incidents , which include an experience of being disinherited from being the mahkota -lrb- or crown prince in english -rrb- by his father , in 1961 , as well as a series of alleged criminal acts occurring between the 1970s and the 1990s which were published in the press and provoked widespread moral outrage within the malaysian public .during his younger days as a prince , malay royalty iskandar was commonly known by his first name , `` mahmud '' or his full name `` mahmud...