St. Bruno was born in 1030 in Cologne, Germany. He became a priest and achieved fame as a professor of theology at Rheims. He decided to leave the world and pursue a life of complete solitude and prayer. He established his hermitage in Chartreuse, near Grenoble, France. Soon he attracted disciples and he established the first monastery of Carthusian monks. Pope Urban II called him to Rome, but later Bruno was able to establish a second monastery in Italy. He died in 1101 at Calabria. This feast is celebrated today both in the Ordinary Form and the Extraordinary Form of the Roman Rite.