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
Born approximately 570CE (Year of the Elephant) in the Arabian city of Mecca, Muhammad was orphaned at the age of six. He was raised under the care of his paternal uncle Abu Talib and Abu Talib's wife Fatimah bint Asad. In later years he would periodically seclude himself in a mountain cave named Hira for several nights of prayer. When he was 40, Muhammad reported being visited by Gabriel in the cave, and receiving his first revelation from God. Three years later, in 610, Muhammad started preaching these revelations publicly, proclaiming that "God is One", that complete "submission" ("islām") to God is the right course of action ("dīn"), and that he was a prophet and messenger of God, similar to the other prophets in Islam.