Knights Templar - Shroud Guardians

The Shroud of Turin is said to have disappeared after the sack of Constantinople in 1204 and remained missing until 1353.

So where was it? Who had possession of it?
Recently a researcher in the Vatican Secret (not so secret) Archives claims he has the answer:

(CNA) A researcher in the Vatican Secret Archives claims to have filled a gap in the known history of the Shroud of Turin, saying that rediscovered records of the Knights Templar trials show the Shroud had been in the possession of the order before it was suppressed.

The Shroud had disappeared in the sack of Constantinople in 1204 during the Fourth Crusade and reports of it do not surface again until 1353, Researcher Barbara Frale said in L’Osservatore Romano. The Shroud was then displayed in a church at Lirey in France by descendants of Geoffroy de Charney, a Templar Knight burned at the stake with the last head of the order, Jacques de Molay. According to L'Osservatore, Frale has uncovered new evidence concerning the Shroud in the testimony surrounding the Knights Templar, a crusading order.

Founded at the time of the First Crusade in the eleventh century, the Knights Templar protected Christians making the pilgrimage to Jerusalem. They took their name from the Temple of Jerusalem, near which they were first stationed.
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And who where the Knights Templar? What were their beginnings, the true beginnings that is, not Dan Brown's version.

Here's a good history source for The Knights Templars

... and The Holy Shroud (of Turin)