Born in Cologne, Germany in 1030. He became a famous teacher at Rheims and at the age of 45, he became the chancellor of the archdiocese. He took part in the fight against the decadence of the clergy and denounce the violent Archbishop Manasses de Gournai. He also founded the religious order, Carthusian Order, which symbolizes his passionate love of a life in penitence and solitude.
He always had a dream of living a life of hermitage, a life in solitary and in prayer. He was given a land by his friend which eventually became his foundation “in the Chartreuse”. He and his friends stayed there in individual cells, spending most of their time in solitude and only eating together during feasts. They mostly worked on copying manuscripts.
In 1674, Pope Clement X extended St. Bruno’s feast to the whole church despite never being officially canonized.