Knights Templar: a very wealthy and powerful military order for nearly 200 years during the Middle Ages. Endorsed by the Catholic Church around 1129, the Order became a favoured charity throughout Christendom and grew rapidly in membership and power. Templar knights, in their distinctive white mantles with a red cross, were among the most skilled fighting units of the Crusades. Other Order members managed an early form of the banking system which helped to build cathedrals and castles.
Yves Klein (1928-1962) was a French artist considered an important figure in post-war European art. He is the leading member of the French artistic movement of Nouveau réalisme founded in 1960 by art critic Pierre Restany. Klein was a pioneer in the development of Performance art, and is seen as an inspiration to and as a forerunner of Minimal art, as well as Pop art.