Do you often wonder if Jesus had brothers and sisters?

Jesus did have siblings while on earth. One that comes to mind is James, but I don't think it was the James that wrote the book of the bible. I know Mary had more children though.

i belive that he had a wife too....

I believe that Jesus had younger brothers and sisters. In those days the oldest son was expected to take over the family business. If he were oldest then his brothers would not have taunted Him. Mark 3:31 31There came then his brethren and his mother, and, standing without, sent unto him, calling him. John 7:3-4) 3His brethren therefore said unto him, Depart hence, and go into Judaea, that thy disciples also may see the works that thou doest. 4For there is no man that doeth any thing in secret, and he himself seeketh to be known openly. If thou do these things, shew thyself to the world. They didn't believe that he was the Messiah until later. 32And the multitude sat about him, and they said unto him, Behold, thy mother and thy brethren without seek for thee. Why would Jesus leave his mother in the care of of the apostle John if she had other sons (John 19:26-27)26When Jesus therefore saw his mother, and the disciple standing by, whom he loved, he saith unto his mother, Woman, behold thy son! 27Then saith he to the disciple, Behold thy mother! And from that hour that disciple took her unto his own home.

The Bible states that Jesus did have many brothers and sisters. He grew up just like any other child would have.