Person
Abd al-Malik ibn Marwan
عبد الملك بن مروان
Abu al-Hakam
646 CE – 705 CE(aged ~59) Quraysh
Abd al-Malik reestablished Umayyad authority after the Second Fitna, centralized administration, introduced Arabic as official language, and completed the Dome of the Rock.
Significance
Marwanid caliph who reunified the caliphate and implemented administrative reforms
Reputation in tradition
praised
Stated motivation
Centralize and consolidate Umayyad power
Sources: Wikipedia and classical Islamic biographical literature compiled by automated researchers. Every page is being continuously refined — if something looks off, please check back in a few days.