Did Mary mother of Jesus have other children with her husband Joseph?
Yes,
Matthew 1:24-25
Then Joseph, being aroused from sleep, did as the angel of the Lord commanded him and took to him his wife.
And did not know her till she had brought forth her firstborn Son. And he called His name Jesus.
Joseph was directly commanded by Gods messenger to have sexual intercourse with his wife Mary mother of Jesus.
Did not know her, is figurative phrase for sex with his wife after Jesus was born.
Nope! Lk 1:34 I know no man no sex period
Mary is perpetual virgin
Mary conceived "without any detriment to her virginity, which remained inviolate even after his birth" (apostolic Council of the Lateran, 649) with the jurisdictional authority of Peter and the apostles in holy council! Matt 16:18 18:18 Jn 20:21-23 eph 2:20 bound on earth bound in heaven!
The Bible never says anyone is a biological child of Mary accept for Jesus Christ!
And the Bible says Her child is holy! And Her child is God!
Is 7:14 God provides a sign, a Virgin shall conceive and bear a son! (Singular, one son)
Ezekiel 44:2 “This gate shall remain shut; it shall not be opened, and no one shall enter by it; for the Lord, the God of Israel, has entered by it; therefore it shall remain shut.”
Song of Solomon 4:12 A garden inclosed is my sister, my spouse; a spring shut up, a fountain sealed.
(Mary had become the temple & dwelling place of the Almighty, like the Ark of the Covenant in the Old Testament. Mary was a vessel consecrated to God alone?)
Matt 1:20 But while he thought on these things, behold, the angel of the Lord appeared unto him in a dream, saying, Joseph, thou son of David, fear not to take unto thee Mary thy wife: for that which is conceived in her is of the Holy Ghost.
(The Bible says only the Holy Ghost conceived in Mary)
Matt 1:21 And she shall bring forth a son, and thou shalt call his name Jesus: for he shall save his people from their sins.
(A son singular) (only Jesus is savior)
Lk 1:28 Hail Mary, full of Grace, the Lord is with thee!
Blessed art thou amongst all women, and blessed is the fruit of thy womb.
(The fruit of Her womb is blessed and holy)
Lk 1:31 And, behold, thou shalt conceive in thy womb, and bring forth a son, and shalt call his name Jesus.
(A son, singular)
Lk 1:34 Then said Mary unto the angel, How shall this be, seeing I know not a man?
(This verse imply’s a vow of perpetual virginity, She refuses even the exalted dignity of mother of God and mother of our savior if it means violating Her vow of perpetual virginity)
Lk 1:35 And the angel answered and said unto her, The Holy Ghost shall come upon thee, and the power of the Highest shall overshadow thee: therefore also that holy thing which shall be born of thee shall be called the Son of God.
(Her son is God)
Matt 1:25 He knew her not till she had brought forth her firstborn son: and he called his name Jesus.
2 Samuel 6:23 tells us: Therefore Michal the daughter of Saul had no child UNTIL the day of her death.
Are we to assume that Michal had children after she died?
Until only states that they had no relation up to that point, the Bible does not say they had sex ever, before or after that point!
Lk 1:34 no sex ever!
First born does not imply a second born. An only child is still first born!
The Bible says Joseph a just and therefore a chaste man, it does not say he has gone into Mary anywhere in scripture, 2 Sam 12:24 And David comforted Bathsheba his wife, and went in unto her, and lay with her: and she bare a son, and he called his name Solomon: and the Lord loved him. Never says this about a Joseph, for He was full of fear and reverence for Her immaculate purity and holiness! Especially after hearing from an angel that her child was of the Holy Spirit! Joseph was full of joy to be the guardian of Mary and her purity!
Isa 66:7 Before she travailed, she brought forth; before her pain came, she was delivered of a man child.
8 Who hath heard such a thing? who hath seen such things? Shall the earth be made to bring forth in one day? or shall a nation be born at once? for as soon as Zion travailed, she brought forth her children.
9 Shall I bring to the birth, and not cause to bring forth? saith the Lord: shall I cause to bring forth, and shut the womb? saith thy God.
10 Rejoice ye with Jerusalem, and be glad with her, all ye that love her: rejoice for joy with her, all ye that mourn for her:
11 That ye may suck, and be satisfied with the breasts of her consolations; that ye may milk out, and be delighted with the abundance of her glory.
12 For thus saith the Lord, Behold, I will extend peace to her like a river, and the glory of the Gentiles like a flowing stream: then shall ye suck, ye shall be borne upon her sides, and be dandled upon her knees.
13 As one whom his mother comforteth, so will I comfort you; and ye shall be comforted in Jerusalem
Adam and Eve were married in the garden but did not have sex, marriage is made by consent not sex!