Apart from Jesus' infancy I thing Mary is always clearly identified as the mother of Jesus.
Mark 15:14 "There were also women looking on from afar, among whom were Mary Magdalene, and Mary the mother of James the younger and of Joses, and Salome". T
he Mary who is identified as the mother of James, Joses and Salome is not identified as the mother of Jesus.
Luke 23:55-56 "The women who had come with him from Galilee followed, and saw the tomb, and how his body was laid; then they returned, and prepared spices and ointments."These women are identified in Lk 24:10 as "Mary Magdalene and Joanna and Mary the mother of James".
Again no identification of Mary, the mother of James as the mother of Jesus.
When Jesus was being laid in the tomb Matthew says "Mary Magdalene and the other Mary were there, sitting opposite the sepulchre." I don't think Matthew would dismiss Mary, the mother of Jesus as the other Mary". (Mt 27:61). Also the "other Mary" who saw where Jesus' body was laid was almost certainly the Mary who took the spices to the tomb and therefore the mother of James.
John tells us that "standing by the cross of Jesus were his mother, and his mother’s sister, Mary the wife of Clopas, and Mary Magdalene." (John 19:25) So now we have three Marys - Mary the mother of Jesus, her "sister" and wife of Clopas, and Mary Magdalene.
It seems to me more likely that Mary Clopas was the "other Mary" who was the mother of James, Joses and Salome.
Moreover Eusebius quoting from Hegesippus (110-180 AD) writes
After the martyrdom of James and the conquest of Jerusalem which immediately followed, it is said that those of the apostles and disciples of the Lord that were still living came together from all directions with those that were related to the Lord according to the flesh (for the majority of them also were still alive) to take counsel as to who was worthy to succeed James. They all with one consent pronounced Symeon, the son of Clopas, of whom the Gospel also makes mention; to be worthy of the episcopal throne of that parish. He was a cousin, as they say, of the Saviour. For Hegesippus records that Clopas was a brother of Joseph.
So Symeon (Simeon, Simon) was the cousin of Jesus, and Mary Clopas was therefore the sister-in-law of Mary the mother of Jesus. Again note the loose use of relationships. Mary Clopas is referred to as Mary’s “sister” in Jn 19:25 when she is actually her sister-in-law.
Then also Luke when listing the apostles says James, son of Alpheus. But the Aramaic Alpheus can be rendered in Greek as either Alpheus or Clopas. So again James, the “brother” of the Lord is probably the son of Clopas (and Mary Clopas).