She was the daughter of Harith bin Hazan. Her original name was Barrah but she was later renamed Maimoonah by the Prophet Mohammad (SAW). She was first married to Abu Rahim bin Abdul Uzza. According to some reports, she was married twice before she became Ummul Mominin. She had been widowed lately when the Prophet Mohammad (SAW) married her at Saraf, a place lying on his journey to Mecca for ‘Umrah in Zul Qa’dah 7 A.H. He had intended to start living with her when in Mecca after performing ‘Umrah but, as Qureysh did not allow him to enter Mecca, he called her over to him in the same place on his return journey. Many years later she died and was buried exactly at the same place in 51 A. H. (when she was 81).
This is a strange coincidence that at a certain place during one Journey she is married, at the same place on the return journey she starts living with the Prophet Mohammad (SAW) and at the very place during another journey she dies and is buried.
Hadhrat Aishah (R.A) says: “Maimoonah was the most pious, and the most mindful of her kith and kin, among the Prophet Mohammad’s (SAW) wives.”
Hadhrat Yazid bin Asam (R.A) says: “She was seen either engaged in Salaat or in domestic work. When she was doing neither, she was busy in Miswak.” She was the last woman to be married by the Prophet Mohammad (SAW). Certain Muhaddithin have, however, mentioned one or two other marriages contracted by the Prophet Mohammad (SAW).
Source : eislam