Christ was also referred to having sisters as well as brothers. Tell me there’s no aramaic words for sister.
Supposing that Mary was a perpetual virgin is an assumption.
And supposing she had other children is also an assumption.
I assume that the assumption that Mary only had one child is probably true because Jesus gave John the care of his mother.
Also if Mary had other children he no doubt would have been a hero to at least one of them.
In the one conversation I am familiar with that was recorded between them they do not appear to talk to Jesus as an older brother but as one would talk to a younger brother, John 7:3-5
Mathew 13
Is not this the carpenter’s son? is not his mother called Mary? and his brethren, James, and Joses, and Simon, and Judas?
Why is it that the brothers are known so well? could it be because they were older? and even the sisters were known.
I think it would not be likely that the younger would be better known than the older.
We all have our assumptions but assumptions is all they are.
Not if you read scripture which says He has brothers and sisters. The "assumption" is on the part of Catholics who try to somehow discount what the Holy Spirit had written.