In the four gospels there are a total of four women listed as being at
the foot of the cross of Jesus at Calvary:
Mary, the mother of Jesus
Mary Magdalene, listed in all four gospels
Mary (the wife of Clopas), the mother of James (the younger),
  Joseph (Joses), and Salome
Joanne, the sister of Jesus' mother (Jesus' aunt) who was the mother
of James and John, the sons' of Zebedee
Scriptural proof:
who the “brothers and sisters” of Jesus were.