The Knights Templar, were originally a Christian order of chivalry, that was organized to protect the Christian pilgrims visiting remains of the temple in Jerusalem and adjacent sites. The Knights of Malta were based on the order after the fall of both Jerusalem and Rhodes, when they moved to the island of Malta.
Unlike the main stream of Freemasonry, which welcomes all upright and honest men of any faith, KT/KM is a particularly Christian order within Freemasonry based on the ethics and codes of these particular orders.
More about the order in Darwin can be found via the link button below.