The Syrian Monastery of St Mark is the location of house of St Mark and his mother.
12 When this had dawned on him, he went to the house of Mary the mother of John, also called Mark, where many people had gathered and were praying.
This monastery is not in communion with the canonical Orthodox churches and it also claims to have the location of the Last Supper which the Orthodox do not claim is the correct location.
Map Link: HERE
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