Are the blue stained glass windows of Chartres Cathedral Templar?

The blue stained glass windows of Chartres Cathedral are renowned for their vibrant colour. They were coloured using a mineral containing cobalt, which is responsible for imparting the deep blue hue. What is known on the origin of the mineral and the colouring proces? And had the Templars something to do with this?

Commemoration of the 711th anniversary of the death of Jacques de Molay

On March 18, 2025 we commemorate the 711th anniversary of the death of the last official Grand Master of the Knights Templar, Jacques de Molay. However, according to Alain Demurger and others the most probable date of the execution was March 11, 1314.

De Molay, born between 1244-1249, was put to death in Paris by the King of France. He was the 23rd and last Grand Master of the Knights Templar although at the time he was simply indicated as the "Master from Outremer". He lead the Order from April 20, 1292 until it was dissolved by order of Pope Clement V in 1312. What is known of his last moments?

A Templar Location at Breda, the Netherlands

In the centre of Breda, on the corner of the Halstraat and the Sint Jansstraat, stood a chapel of Saint John that is sometimes said to go back to the Templars. The lords of Breda certainly had ties with the order. But was there ever a Templar chapel in the town itself?

The 12th century school of Chartres - mathematics and geometry keys to beauty and aesthetics

 

"The Renaissance of the 12th century is maybe even more interesting to study than the ‘Renaissance’ most people are familiar with. The Cathedral school of Chartes was the most famous of the Medieval cathedral schools and precursor to the University of Paris that was founded in 1150. What was the main impact of the School of Chartres?