Let's talk about the link between the Knights Templar and Friday the 13th.
King Philip IV of France became displeased with the Templar knights and devised a plan to exterminate them all on October 13, 1307. He sent out orders a month in advance with instructions not to read the plans until Friday the 13th. Because of Pope Clement V's support, Philip accused the Knights of terrible crimes, making no one want to come to their aid. The plan was successfully carried out, and all the Templar knights were arrested, their properties were confiscated, and they were executed. Hence, October 13th is considered one of the unluckiest days in history.
The photo here (photographer unknown) is of the three graves recently found in late 2021, which are believed to be around 800 years old. Each has a Templar cross within double circles in a standard Templar design, and one of the graves also includes a Crusader cross indicating the knight was a Templar and a Crusader. They are located on the grounds of St Mary’s Church in Enville, UK.