The whole fascination with the alleged bloodline of Jesus and the Templar association with the Holy Grail goes back hundreds of years. But in relatively recent times, the 1970s to be exact, there was a huge surge of interest in this subject. It was a decade obsessed with the occult and the esoteric.
Henry Lincoln was a charismatic individual who satisfied the insatiable curiosity of the public in these areas. He was convinced that stories about a shadowy organisation called the Priory of Sion dedicated to preserving the bloodline of Christ were true. So, he changed tack in his broadcast career from writing scripts for the BBC television series Doctor Who in the 1960s to presenting programmes about the Templars in the 1970s.
In a book called The Holy Blood and the Holy Grail, published in 1982, Lincoln and his co-authors promoted the hypothesis that the Priory’s main aim was to re-instal the Merovingian dynasty that had once ruled France. These kings had allegedly intermarried with the descendants of Christ. The Messiah, it turned out, had been the husband of Mary Magdalene and she had borne him children.
The popes in Rome have always known that a bloodline of Jesus exists and the role of the Knights Templar, called into existence by the Priory of Sion, has been to protect those descended from Christ. The idea being that it’s the intention of the Vatican to snuff out the bloodline because it poses a threat to papal power. It also reveals that Jesus was very different to the biblical portrayal.
Academics and professional historians are almost 100% united against this account of the Knights Templar as a brainchild of the Priory of Sion, an organisation protecting the bloodline of Jesus. But the book written by Henry Lincoln was an undeniable influence on the Da Vinci Code though I should point out that an attempt by Lincoln’s co-authors to sue Dan Brown failed.
It would also be dishonest of me not to mention that the originator of the Priory of Sion theory was a Frenchman called Pierre Plantard in 1956 who claimed that he himself was in the bloodline of Jesus and descended from the Merovingian kings. He is widely regarded as having perpetrated an elaborate hoax.
Here is Henry Lincoln in 1979 on the BBC explaining his theory.
Henry Lincoln has developed his theories further since the Da Vinci Code was published and you can see a later documentary here: