The only ones changing Christian history is the Catholic church which makes up stuff contrary to the revealed word of God, which, very ironically, Catholics claim it wrote.
That same Scripture is very clear that Joseph and Mary consummated their marriage after the birth of Jesus.
Mary of the Bible certainly did have other children...
Psalm69:8 I have become a stranger to my brothers, an alien to my mother's sons.
Matthew 1:24-25 When Joseph woke from sleep, he did as the angel of the Lord commanded him: he took his wife, but knew her not until she had given birth to a son. And he called his name Jesus.
Matthew 12:46-47 While He was still speaking to the multitudes, behold, His mother and brothers were standing outside, seeking to speak to Him. And someone said to Him, “Behold, Your mother and Your brothers are standing outside seeking to speak to You.”
Matthew 13:55 “Is not this the carpenter’s son? Is not His mother called Mary, and His brothers James and Joseph and Simon and Judas?”
Mark 6:2-3 And when the Sabbath had come, He began to teach in the synagogue; and the many listeners were astonished, saying, “Where did this man get these things, and what is this wisdom given to Him, and such miracles as these performed by His hands?”... “Is not this the carpenter, the son of Mary, and brother of James, and Joses, and Judas, and Simon? Are not His sisters here with us?”
John 2:12 After this He went down to Capernaum, He and His mother, and His brothers, and His disciples; and there they stayed a few days.”
Acts 1:14 These all with one mind were continually devoting themselves to prayer, along with the women, and Mary the mother of Jesus, and with His brothers.
1 Corinthians 9:4-5 Do we not have a right to eat and drink? Do we not have a right to take along a believing wife, even as the rest of the apostles, and the brothers of the Lord, and Cephas?
Galatians 1:19 But I did not see any other of the apostles except James, the Lord’s brother.
Strong's Concordance
http://biblehub.com/greek/80.htm
adelphos: a brother
Original Word: ἀδελφός, οῦ, ὁ
Part of Speech: Noun, Masculine
Transliteration: adelphos
Phonetic Spelling: (ad-el-fos')
Short Definition: a brother
Definition: a brother, member of the same religious community, especially a fellow-Christian.
Here is a link to the occurrences of the Greek word *adelphos*.
http://biblehub.com/greek/80.htm
The word *sister* (adelphe) in the Greek is the same.
http://biblehub.com/greek/79.htm
The word used is *brother* not *cousin*.
It can't mean a member of the same religious community in the context in which they occur, because then that would mean every man in Israel could be identified as Jesus' brother. So that would not identify Jesus as anyone in particular's brother.
It's not going to mean *brother in Christ* as that concept was not yet in place and the Jews, who knew Jesus as a Jew and knew His brothers as Jews, would not even begin to understand the new birth and what being in Christ meant.
They didn't even understand who JESUS was, much less being a *brother in Christ*.
The only definition left then, is to mean physical brother.
And it would not be *cousin*.
The word for *relative* that is used for Elizabeth is *suggenes*, not *adelphe*.
http://biblehub.com/greek/4773.htm
Strong's Concordance
suggenes: akin, a relative
Original Word: συγγενής, ές
Part of Speech: Adjective
Transliteration: suggenes
Phonetic Spelling: (soong-ghen-ace')
Short Definition: akin, a relative
Definition: akin to, related; subst: fellow countryman, kinsman.
Nope..she certainly may have had step children by Joseph's first marriage but cousins, because there was really no word for them were usually referred to as brothers. Joseph was much older than Mary are may or may not have been able to sire further children.. whatever, prottys will say just about anything as long as it contradicts Catholic teaching. I don't see where this is that important a point anyway....one way or the other. When people make bad decisions they will do just about anything to justify that decision....usually doesn't work.