John Cornelius
English Jesuit priest and martyr
Feast: 4 July (not on the universal Roman calendar; kept in the Roman Martyrology or local calendars)
Who they were
John Cornelius, also called Mohun, was born of Irish parents at Bodmin in Cornwall in 1557, on the estate of Sir John Arundell, who sent him to Oxford. Unhappy with the new religion taught there, he went to Reims and in 1580 to the English College in Rome. Ordained, he worked in England for nearly ten years and was known for his penance, prayer and zeal.
While chaplain to Lady Arundell he was arrested at Chideock Castle on 24 April 1594. Taken to London and tortured, he would not name those who had sheltered him. He was admitted to the Society of Jesus in prison, condemned at Dorchester for being a priest, and executed there on 4 July 1594, the last of four to die that day, after praying for his executioners and for the queen.
The miracles
As a martyr he was raised to the altars without a miracle.
Why that counted as sanctity
An English Jesuit put to death at Dorchester in 1594 with three who had helped him.
The cause
John Cornelius has been beatified; the cause continues. Favours received, and offers of help, go to the postulation, the office that carries the cause forward: Jesuits: the cause of John Cornelius.
Connected on this site
- John Carey Blessed“John (or Terence) Carey was an Irish layman, born in Dublin, and servant of Thomas Bosgrave and was put to death with Thomas Bosgrave, John Cornelius (a priest, born of Irish parents in Bodmin in Cornwall), and Patrick Salmon, another lay helper also of Dublin birth, at Dorchester in Dorset in 1594.” — Wikipedia
- Patryk Salmon Blessed“He was put to death for his faith at Dorchester, England, on 4 July 1594, on the same day as the Jesuit John Cornelius and the laymen Thomas Bosgrave and John Carey.” — this site's research
- Thomas Bosgrave Blessed“When the priest John Cornelius was dragged bareheaded from Chideock Castle in April 1594, Bosgrave offered him his own hat and was arrested for it.” — this site's research
- Catholic Encyclopedia (1913), via New Advent - Ven. John Cornelius and Companions
- Roman Martyrology, 4 July (Italian Bishops' Conference, Santo del giorno)
- Wikidata Q6227148 — dates, feast day and identifiers (CC0)
- English Wikipedia — John Cornelius (priest) (CC BY-SA)
Checked against the sources listed on 22 September 2026. Corrections welcome.