Marwan ibn al-Hakam ibn Abu al-'As ibn Umayyah (623 – 7 May 685) (Arabic: مروان بن الحكم بن ابو العاص بن أمية‎) a Sahaba and also was the fourth Umayyad Caliph, and the cousin of Uthman ibn Affan, who took over the dynasty after Muawiya II abdicated in 684. Marwan's ascension pointed to a shift in the lineage of the Umayyad dynasty from descendants of Abu Sufyan (the "Sufyanids") to those of Hakam (the "Marwanids"), both of whom were grandsons of Umayya (for whom the Umayyad dynasty is named).