From the Douay-Rheims and the Latin Vulgate:
John 19:25 Now there stood by the cross of Jesus, his mother and his mother's sister, Mary of Cleophas, and Mary Magdalen.
stabant autem iuxta crucem Iesu mater eius et soror matris eius Maria Cleopae et Maria Magdalene
Hopefully, this is broken down correctly:
Iesu mater eius "Jesus' mother" (lit: Jesus mother His)
et soror matris eius Maria Cleopae "and sister (of) mother His Mary (of) Cleopas"
et Maria Magdalene "and Mary Magdalene"
At least,, this is how it appeared in the late 300s to Saint Jerome. Many translations into English need further explanation, due to the often confusing nature of the English language.