Muhammad
Muhammad's life is traditionally defined into two periods: pre-hijra (emigration) in Mecca (from 570 to 622), and post-hijra in Medina (from 622 until 632). Muhammad is said to have had thirteen wives in total (although two have ambiguous accounts, Rayhana bint Zayd and Maria al-Qibtiyya, as wife or concubine.) Eleven of the thirteen marriages occurred after the migration to Medina.
Muhammad's wives
Aisha was the daughter of Muhammad's close friend Abu Bakr. She was initially betrothed to Jubayr ibn Mut'im, a Muslim whose father, though pagan, was friendly to the Muslims. When Khawlah bint Hakim suggested that Muhammad marry Aisha after the death of Muhammad's first wife (Khadija), the previous agreement regarding marriage of Aisha with ibn Mut'im was put aside by common consent.