There is mention of Joseph in the Gospels three times more after the birth of Jesus.
The first is that he and Mary went to the Temple in Jerusalem for Mary’s purification and the presentation of the Child to God - where they were given numerous prophecies about the child’s and Mary’s future life
The second mention of Joseph is that he fled with Mary and the infant Jesus to Egypt for some years because Herod, worried by prophecies about a new King of the Jews, ordered all the male children of Bethlehem to be killed.
The third is that when Jesus was 12, he went with Joseph and Mary to Jerusalem at Passover and was accidentally left behind for some days :bigyikes: He was found again in the Temple, apparently arguing with the teachers there and flooring them with his knowledge
But tradition is indeed that Joseph died before Jesus began his ministry - evidence being that at his own death Jesus gives Mary into the care of his follower John.
And yes, it is an article of the Catholic faith (though not for all Christians) that Mary had no further children after Jesus - and in fact remained a virgin all her life, since even his conception was miraculous rather than occuring in the normal manner.