The Carthusians’ liturgical calendar is relatively uncluttered. Never prone to proclaim their own saints, they enjoy a wide freedom to choose a variety of ‘votive’ Masses, each with a different petition and liturgical theme. (St. Hugh was their first formal saint, canonized not by his own Order but at the insistence of the Church at large when he died, as the much-loved Bishop of Lincoln. Even Bruno himself only became a saint by the back door: two centuries after his death, the Carthusians asked the Pope if they might solemnize his feast day of 6th October. His response was to canonize their founder without further process.)
—John Skinner. Hear Our Silence. (London : Fount Paperbacks, 1995) p. 109.