John Langdon was a medieval Bishop of Rochester

Bishop of Rochester

The Bishop of Rochester is the ordinary of the Church of England Diocese of Rochester in the Province of Canterbury.The diocese covers the west of the county of Kent and is centred in the city of Rochester where the bishop's seat is located at the Cathedral Church of Christ and the Blessed Virgin...

.

Langdon was admitted a monk of Christ Church, Canterbury, in 1398. Afterwards he studied at Oxford

University of Oxford

The University of Oxford is a university located in Oxford, United Kingdom. It is the second-oldest surviving university in the world and the oldest in the English-speaking world. Although its exact date of foundation is unclear, there is evidence of teaching as far back as 1096...

, and is said to have belonged to Gloucester Hall

Gloucester College, Oxford

Gloucester College, Oxford was a Benedictine institution of the University of Oxford, from the late thirteenth century until the Dissolution of the monasteries in the 16th century. It was never a typical college of the University, in that there was an internal division in the College, by staircase...

. He was one of twelve Oxford scholars appointed at the suggestion of convocation in 1411 to inquire into the doctrines of Wycliffe. On 17 November 1421 he was appointed by papal provision to the see of Rochester

Diocese of Rochester

The Diocese of Rochester is a Church of England diocese in South-East England and forms part of the Province of Canterbury. It is an ancient diocese, having been established in 604; only the neighbouring Diocese of Canterbury is older in the Church of England....

, and was consecrated on 7 June 1422 at Canterbury

Canterbury

Canterbury is a historic English cathedral city, which lies at the heart of the City of Canterbury, a district of Kent in South East England. It lies on the River Stour....

 by Archbishop Chicheley

Henry Chichele

Henry Chichele , English archbishop, founder of All Souls College, Oxford, was born at Higham Ferrers, Northamptonshire, in 1363 or 1364...

. After his consecration he appears among the royal councillors, and after 1430 his name constantly occurs among those present at the meetings. In February 1432 he was engaged on an embassy to Charles VII of France

Charles VII of France

Charles VII , called the Victorious or the Well-Served , was King of France from 1422 to his death, though he was initially opposed by Henry VI of England, whose Regent, the Duke of Bedford, ruled much of France including the capital, Paris...

. On 18 February 1434 he had license to absent himself from the council if sent on a mission by the pope or cardinals, and on 3 November of that year was appointed to treat for the reformation of the church and peace with France. Langdon had, however, died at Basle on 30 September.

It is commonly alleged that Langdon's body was brought home for burial at the Charterhouse, Loudon, but in reality he was interred in the choir of the Carthusian monastery at Basle.