Did Jesus have siblings??

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I came across an article in a daily. According to which, deep in the Judean dessert, in a remote area of the Holy land that is very much like the ones in Biblical times, there's a Greek monastry with a highly unusual portrait of Jesus in its chapel. In this picture, there is young Jesus being carried on Joseph's shoulder, while his mother Mary rides behind them. And there is a mysterious fourth figure- a young man with a golden halo who is wearing a simple dark robe. His name is James, and, according to a controversial Channel 4 documentary, to be screened on Christman Day, Jesus did have a hidden family, not wife and children(like in The Da Vinci Code), but brothers and sisters-James, Joses, Simon, Jude( sometimes referred to as Judas), Salome and young Mary. The documentary claims that the church tried to eradicate them from the history by re-writing Christ's story, falsely crediting him with creating the Lord's Prayer and inventing the Idea that hi mother Mary was a Virgin liflong. Over the centuries, ther ehad been many theories. The most is that Joseph was a widower, who had children from his first marriage when he met Mary and that James and his other siblings are only Jesus' half brothers and sisters. I have no idea if these theories are true or not. What do you think about it? Does anybody else, have any information about this?