How are James and Joseph and Simon and Judas related? Are they brothers? So it's ok to call them brothers, but when it comes to Jesus, the word has a broader meaning.
James, Jose, Simon and Jude are related through their Mother, Mary of Clopas, and their father Clopas; hence neither of which are sons of Mary of Joseph. Judas is known as Jude, the author of Scripture with that name and Joseph is known as Jose as we understand for Jewish tradition.
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Mary is Ever Virgin for reason. God is all knowledge that has contemplated himself, thus becoming "the brightness of his glory, and the [express image, and most perfect resemblance], and upholding all things by the word of his power, making purgation of sins, sitteth on the right hand of the majesty on high." [Hebrews 1:3]. His acts then, the incarnation, have expressed meaning. Just is God is incapable of sin, He acts within the confines of His own laws, first given to Judaism. The Jews carried the ark of the Covenant from site to site for millennia after millennia, each location the ark rested was a holly place, not to be violated by man. In Mary the Mother of God, we find the "Living Covenant", Christ Himself, hence to violate that holly place would result in death, spiritual death. The consequence then is Mary becomes inexplicably tied to your salvation; not as the primary source of grace, but rather a channel through which the Living Grace comes. Failing to recognize this simple truth makes the vision of Christ flawed, perverted and distorted by one's own will. Christ then becomes a magical figure, unreal, without substance and without Wisdom, incapable of your salvation.
If you wish to say, your grace comes directly through God, He need not act through others, a Truth of the forgone act of salvation lies unrecognized. We know the Living Salvation comes to us through others by simple acknowledgement of Mary, the Virgin Mother of God. Thus, the salvation you think can have without Ever Virgin Mary is nothing more than 'good vibes', a nice feeling somehow comforts you while facing our ultimate demise. Without her, as the Mother of the Church, one remains outside the walls of His Kingdom, subject to all the real threats of the wilderness.
JosephT