They don't KNOW. They BELIEVE because:
1) The Bible says she was a virgin when she conceived Jesus (most Christians)
2) Sacred tradition says she was a virgin her whole life (orthodox, roman catholic, and some Anglican christians)
Roman Catholics, Orthodox Christians, some Anglicans and a few other believe the Bible and Sacred Tradition are both divinely inspired.
Most protestants believe only that the bible is divinely inspired.
No, Mohammad is not in the lineage of the Virgin Mary. The Virgin Mary is a descendent of King David.
We know the names of her parents but not the names of Mary's grandparents.
No, Virgin Mary is not single.
Personally, no, I have not seen the Virgin Mary.
Mainly for being the mother of His Holiness Jesus Christ.
There is nothing in scripture stating Mary was not a virgin.
Virgin Mary has 1 child
Yes, Virgin Mary has 1 kids
Yes, Virgin Mary has 1 kids
Virgin Mary has 1 child
no she was actually known as bloody Mary because she killed so many people virgin Mary was Jesus's mum Mary because she was a virgin when she had Jesus
The Holy Virgin Mary was created in 1996.