Could this monastery on the Greek island of Patmos be relevant to the VMS?

[MarcoP]

You are not allowed to view links. Register or Login to view. shows the monastery before restoration. Though the resolution is poor, it does show that ghibelline merlons were there.
   

You are not allowed to view links. Register or Login to view. is a 15th copy of Buondelmonti that shows merlons on the monastery (f.36v). I don’t know if it’s an autograph, but it’s not much later than the author, who visited Patmos in the early 15th century. The crenellations here are generic, but given the scale of the illustration I think this is understandable. Also, I doubt there could have been reasons for the merlons to change shape between 1400 and 1926. I also include a vulcano from f.19r because it's cool (Nisiros, I think).
   

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For what it’s worth, my personal opinion is that:

• The swallowtail merlons were added in medieval times by the Venetian rulers of the island. The merlons had both a political and a military function.
  
• They were restored by the Italians during their occupation of Patmos at the times of the fascist regime. The merlons had the political nationalist function of underlining the ancient Italian dominion.
  

I cannot see any reason why people should have added Ghibelline merlons in a Greek island in the 17th century, when the merlons made no military and no political sense. I understand that the 17th century interventions aimed at avoiding the collapse of the building, and were structural rather than aesthetical.