Facts:   - issue: barkiyaruq khatun sitara khatun gawhar khatun ismah khatun muhammad tapar ahmad mahmud i dawud mah-i mulk    - title: sultan of the seljuq empire    - caption: miniature of malik-shah i    - reign: 1072 -- 1092    - successor: mahmud i    - death date: 19 november 1092 -lrb- aged 37 -rrb-    - spouse: terken khatun zubayda khatun taj al-din khatun    - predecessor: alp arslan      - house: house of seljuq    - father: alp arslan    - birth date: 8 august 1055    - name: malik-shah i    - image: büyük selçuklu sultanı melikşah.jpg    - death place: baghdad    - religion: islam   Based on these bullet points, write a short biography describing the life of malik-shah i .
jalāl al-dawla mu'izz al-dunyā wa ` l-din abu ` l-fatḥ ibn alp arslān -lrb- 8 august 1055 -- 19 november 1092 -rrb- , better known by his regnal name of malik-shah i -lrb- ; -rrb- , was `` sultan '' of the seljuq empire from 1072 to 1092 .during his youth , he spent his time participating in the campaigns of his father alp arslan , along the latters `` vizier '' nizam al-mulk .during one of alp arslan 's campaigns in 1072 , the latter was fatally wounded and died only a few days later .after that , malik-shah was crowned as the new sultan of the empire , however , malik-shah did not access the throne peacefully , and had to fight his uncle qavurt , who claimed the throne .although malik-shah was the nominal head of the seljuq state , the `` vizier '' nizam al-mulk held near absolute power during his reign .malik-shah spent the rest of rest waging war against the karakhanids on the eastern side , and establishing order in the caucasus .malik-shah 's death to this day remains under dispute ; according to some scholars , he was poisoned by the caliph , while others say that he was poisoned by the supporters of nizam al-mulk .