Lovuian and Davino, regarding that particular "star" or cross shape that you both showed above, I included that same design in my book (page 318 for those here who have a copy).
It has some relevance for my research in India and China... it was known as the Cross Potent. The crusaders used this design, often in red.
Dr. Victor Mair , who spent over 30 years as an archaeologist in the Tarim Basin-Kashgar area, has found the same symbol was associated with magi visiting the area even before the birth of Christ.
In Kashgar is/was located an ancient tomb for "Bibi Injeel" or the "lady from the Bible". I presume that to be one of the Biblical Marys or Mariams. Several of us have made attempts to get to that grave before it dissapears because China is tearing down that old section of Kashgar to make room for new modern buildings.
So my guess is that the Crusaders "may" have used it not only as a symbol of Christianity, but also as a symbol of the secrets of the ancient magi..or the White Brotherhood, which was a branch of magi..I was also looking at the links between magi and Druids..hope this is helpful to you.
Thanks so much Shasta
You will find or probably already know this Shasta
that the symbols used by the Templars was the eight pointed star ....Star of Isis or Ishtar Queen of Heaven
what is indicated was code for Holy Grail
So we have Rennes Les Bains and Rennes placing the very ancient symbol in their churches
Another thing is that Rennes ceiling has stars up above in its sky
At rosslyn the roof have the stars in stone up above your head
Yes Shasta the star goes way way back to the earliest civilizations of man ...to the Summerians
The Persians and Summerians
But yes the Magi
great pointMair connects the ancient Bronzeware script for wu 巫 "shaman" (a cross with potents) with a Western heraldic symbol of magicians, the cross potent ☩, which "can hardly be attributable to sheer coincidence or chance independent origination."http://en.wikipedia.org/wiki/Magi
Here is the MAGI and there is the eight pointed star of Isis
Basilica of Sant'Apollinare Nuovo in Ravenna, Italy 526 AD
named Balthasar, Melchior, and Gaspar)