Abdul-Rahman ibn Abi Bakr (died 666) was the eldest son of Abu Bakr, the first caliph in Sunni Islam. His mother was Um Ruman bint Amir ibn Uwaymir ibn Zuhal ibn Dahman and he was the full brother of Aisha. He and three other children of Abu Bakr namely Abdullah, Aisha and Asma were born sometime between 595 AD to 609 AD. It is said that he had a good sense of humour. Unlike the rest of his family, including his father Abu Bakr and sister Aisha, he did not convert to Islam until the Treaty of Hudaybiyah in 628 AD.