Al-Hakam ibn Abi al-'As
Al-Hakam ibn Abi al-`As ibn Umayyah (Arabic: الحكم بن أبي العاص / ALA-LC: al-Ḥakam bin Abī al-‘As) was the father of the Umayyad Caliph Marwan I, and an uncle of Uthman. He is regarded as a Sahabi by Sunnis.
Hakam was the grandson of Umayya ibn Abd Shams, for whom the Umayyad clan is named. His father was Abu al-'As ibn Umayya. His brother was Affan ibn Abi al-'As the father of Uthman, the third Sunni Caliph, and his son Marwan ibn al-Hakam was the eighth Sunni Caliph.
Saffya bint abi al-A'as, al-Hakam's sister, is the aunt of Uthman ibn Affan, the wife of Abu Sufyan, and the mother of Ramlah bint Abi-Sufyan, a wife of Muhammad. He also had brother named Uthman ibn Abi al-'As.