Some possible new content for New Testament people named Mary.
List of Saints
editList of Saints named Mary from http://www.catholic.org/saints/stindex.php?lst=M&page=2
St. Mary Salome Bl. Mary Bartholomea Bagnesi Bl. Mary Angela Truszkowska Bl. Mary Tokuan & Mary Choun St. Mary Clopas St. Mary Di Rosa St. Mary of Egypt Bl. Mary Elizabeth Hesselblad St. Mary Fan-K'Ounn St. Mary Fou Bl. Mary Guengoro St. Mary Hermina Grivot St. Mary MacKillop St. Mary Magdalene de Pazzi Bl. Mary Magdalen Kiota St. Mary Magdalen Postel St. Mary Magdelene St. Mary Nan-Kouo-Cheu Bl. Frances Siedliska St. Mary of the Cross MacKillop St. Mary Salome Bl. Mary Tanaura St. Mary Tchao St. Mary Tchao-Kouo-Cheu St. Mary Tcheng-Su St. Mary Tchou-Ou-Cheu St. Mary the Consoler Bl. Mary Theresa Scherer St. Mary the Slave Bl. Mary Tokuan & Mary Choun St. Mary Tou-Tchao-Cheu St. Mary Ts'I-U Mary the Blessed Virgin St. Mary Wang-Li-Cheu St. Mary Yi Yon-hui
List of early Christian saints has only five listed as Mary, four of which are 1st century: Mary (mother of Jesus) feast day January 1 [1] Mary Magdalene feast day July 21 [2] Mary of Bethany (but identified with Mary Magdelene feast day July 21 [3]) Mary of Clopas feast day April 24 [4]
We should probably add Mary Salome, and need to clearly account for the others. http://www.catholic.org/saints/saint.php?saint_id=4954 identifies Salome with Mary, mother of John Mark and gives a feats day of June 29 but unfortunately http://www.catholic.org/saints/saint.php?saint_id=4962 which identifies her also with Mary mother of James gives a different feast day of October 22.
So we probably have four in all.