Abdu'r-Rahman

Abd ar-Rahman ibn Abi Bakr was the eldest son of Abu Bakr, the first Sunni caliph.Shi'a Muslims say that he opposed the rise to power of the Umayyad caliphs. "When Marwan entered into discussions with the tribe of Salim, Abdul Rahman ibn Abu Bakr stated 'In the same way that one king nominates another king to succeed him; one Umayyad is seeking to appoint another Umayyad to succeed him'. Marwan then told Abdul Rahman to be silent." "When Abdul Rahman refused to give bayya to Yazeed, Mu'awiya sent Abdul Rahman one thousand dirhams. Abdul Rahman replied 'Do you expect me to sell my religion for dinars?" (ref)
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[Islamic] The son of Abu Bakr, who fell in love with the daughter of Abu Sufyan, archenemy of the Prophet Muhammad, and married her. He joined his father-in-law in raiding Muslim caravans until his own father converted him and his wife to Islam. After their conversion they became staunch defenders of Islam against Abu Sufyan who was finally defeated by Ali (the first imam).