Prophet Muhammad (peace upon him) was born in 570 AD. Since Assaida Khadija (Allah be pleased with her)was older than the prophet with 15 year. Then she was born around year 555 AD.
hazrat khadija was born in 595 AD
Hazrat Muhammad S.A.W.W married to Hazrat Khadija R.A
Mysara
Besides Ummul Momineen Hazrat Khadija (RAU), Hazrat Maria (AS) is the other wife of our beloved Prophet (SAW) who gave birth to a son named Hazrat Ibrahim (AS). He died at an early age.
umm-ul-momineen
570
Hazrat khadija r.a
4 bce
No,Prophet Mohamed (peace upon him) did not marry during his wife Khdija life. His second marriage was after Khadija death with two years.-ELO-
Hazrat Muhammad PBUH
She was an extremely loyal, faithful, sincere and ideal wife.
Hazrat Khadija had three brothers awam,nofal and hazaam and one sister Haala. Awam was the husband of Prophet MOhammad(SAWW)'s aunt Safya.
It was the prophet(pbuh) himself.After the first Revelation the Prophet(pbuh) rushed home to hazrat Khadija and told her what had happened in the cave of hira then Hazrat Khadija took the Prophet(Pbuh) to his cousin and he confirmed Muhammad(pbuh) as the final messenger of Allah.