An angel came down and told him that he was going to have a son that would be powerful. And he dreamed it too.
The Bible doesn't say how he found out, but the angel came to reassure him that Mary was not immoral. He already knew by then about her pregnancy because he was considering not marrying her.
Nazareth
There is no biblical texts which I am aware of, that identify the first meeting of Joseph and Mary. You will find Josephs account written in the early chapters of Matthew and Mary's account written in the early chapters of the book of Luke.
Joseph and Mary were the parents of Jesus of Nazareth.
Mary rode on a donkey, and Joseph walked
No, Mary was not married to Joseph when she conceived.
Joseph and Mary recognized Jesus in the temple.
The question is not clear. Joseph was Mary s husband.
Mary Joseph Butler was born in 1641.
Mary Joseph Butler died in 1723.
Both Joseph and Mary lived in Nazareth in the Roman period, and when king Herod was the ruler.
Yes, Mary was married to Joseph according to Christian tradition.
Mary and Joseph were Jewish the same with their son Jesus.