The one thing that REALLY got me, was the actual painting of the Last Supper by DaVinci. Look closely at "John", the "man" sitting Christ's right side. Looks awfully like a woman to me....could it be Mary Magdeline? 
Well, it could have been MM in DaVinci's mind, but this still doesn't mean that this was the way it really was. After all, this is a painting and not a photograph
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BTW, did DaVinci ever portray, within that same theme, any men without beards before? If this is the first time a man was painted by him without a beard in that theme and time period, then maybe that confirms that DaVinci meant it to be a woman...
But again, that doesn't mean that it real life this is how it went.
IMHO, in reality, in all probability there would have been women at the "last supper" table, as this was the Passover Seder in which women would most definitely be taking part (if there were any women with them). What we have seen in DaVinci's paintings, and many others, are artists' renditions of what they thought the last supper looked like, what it really looked like was probably something completely different, based on history and tradition, that is
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