Dovekin:
which we should now probably correct by giving her a day in the calendar despite her being nameless.
Is that possible? Are there any precedents>
In the East, the Myrrhbearers are honored. This is a group of women including those who took myrrh to the tomb on Easter, as well as the women who anointed Jesus, named and unnamed. I think membership is unclear, though Mary Magdalene is always included, and different people probably define who belongs differently.
Assuming Mt and Mk are about the same person, that leaves 1-3 persons who anointed Jesus; that unnamed woman, the unnamed woman in Luke 7, and Mary, sister of Martha and Lazarus from John 12. The most likely scenario would be St Mary, not from Luke but including the unnamed woman from Mk & Mt. (which is only a step away from merging them all with Mary Magdalene) I like the idea of a 3 year cycle of the story from Mt, Mk, and John, same day but version changes. It is an unwieldy idea, I would probably prefer she be given a place of honor in Holy Week, like at the Chrism Mass…
There have been lots of anonymous saints, though they usually end up being named at some point. St Corona was probably a reference to the Martyr’s Crown at first, but now her relics are on display somewhere. St Coloman in Melk was killed for being an outsider, “anonymous”, though he turned out to be an Irish pilgrim who just did not know the language. Groups of saints, like the Seven Sleepers, sometimes have a name or two and then anonymous members. Nothing really matches the situation here, where there is a well defined person who lacks a name.
There are still people who identify all these women together with MM, so it will be hard to separate. With MM on July 22, St Martha was put on the octave, July 29, and now Mary is remembered with her sister and is distinct from MM in some places. But St Martha has her own day still on the Roman calendar, while St Mary, despite choosing the better part, has no day I think.