The Knights Templars were founded as the " Poor Knights of the Temple of King Solomon" which is their real name, in the year 1119 and their headquarters were on the Temple Mount the site were Solomon's Temple was built.
Their primary objective was to protect the Holy Land from Islam, later they also included other services such as guiding and protecting pilgrims to the Holy Land. They eventually moved, at least some of them, to Europe, and here they eventually evolved into becoming financial innovators, they can be described as the founders of modern banking, and they became immensely rich.
In fact this was the reason for their downfall, they became so rich and powerful that they became a threat both to Papal Rome and to all European monarchs and lords. Most of them were in the Knights debt and were forced to do as the fighting monks wished. So they just naturally came together and made one swift stroke to destroy the knights.
And this was done, the Knights ceased to exist as an entity, many were killed but some of them escaped, some went to Scotland and others just went underground. Their fortune was in part sacked by their killers but a big part was not readily available as it was stored in secret places.
I think the Knights went on functioning their members now under the clothes of other religous orders or actually going into civilian life and continuing with their financial work. I seriously think that if all of these conspiracies involving Illuminati, Freemasons, Rothschilds, NWO, etc are true we should look for the root of these organizations in the Knights Templars.
I think if we research these fighting monks very carefully we will be able to follow a path that will lead us to the centers of power and wealth that exist today. The Knights were the start of the modern systems of exploitation of the common man, and they have had about 900 years to be evolving there methods making them more efficient over time.
I frankly don't believe in any of the Vril, Reptilian and other conspiracy theories, I think they are just too fantastic to be true, but I do think that an organization founded and led by a religious group who had a religious reason for keeping their affairs secret could very well be the reason for what is happening today. Heck, maybe Satoshi Nakamoto is in reality just a Knight Templar.