Denis the Carthusian
theologian
Who they were
Denis van Leeuwen was born at Ryckel in Limburg in 1402 and as a child kept his father's sheep. Brilliant at school at Saint-Trond and Zwolle, he felt his hunger for learning dulled his piety, and became a Carthusian.
He read and wrote immensely, including commentaries on the whole Bible, and suffered paralysis and other infirmities with heroic patience. He died on 12 March 1471 after forty-eight years as a monk.
The miracles
The Catholic Encyclopedia records that his cause of beatification had never been introduced, though St Francis de Sales, St Alphonsus Liguori and other writers call him 'Blessed'.
Why that counted as sanctity
A Carthusian scholar whose learning served his prayer.
The cause
The cause continues. No postulation address is published here yet. Favours received through this person’s intercession, and offers of help, are best sent to the religious order or congregation they belonged to, or to the diocese where the cause was opened; either will pass them to the postulation.
Connected on this site
- Francis de Sales Saint“The Catholic Encyclopedia records that his cause of beatification had never been introduced, though St Francis de Sales, St Alphonsus Liguori and other writers call him 'Blessed'.” — this site's research
- Catholic Encyclopedia (1913), via New Advent - Denis the Carthusian
- Wikidata Q690346 — dates, feast day and identifiers (CC0)
- English Wikipedia — Denis the Carthusian (CC BY-SA)
Checked against the sources listed on 21 September 2026. Corrections welcome.