This article relies largely or entirely on a single source. (June 2011)
Early life and education
John Archibald Henslowe Orchard, the son of a farmer, was born in Bromley, Kent. He was educated at Ealing Priory School (to which he would in later life return as headmaster), and on leaving in 1927 became its first pupil since foundation in 1902 to go to university, winning a place at Fitzwilliam House, in the University of Cambridge, where he read History and Economics. At Ealing Priory he shared classes with Reginald C. Fuller with whom he would in later life collaborate on scholarly projects.
After graduating Orchard taught initially at a preparatory school before in 1932 taking the monastic habit at Downside Abbey, adopting the name Bernard; he was subsequently ordained as a Roman Catholic priest in 1939. At Downside he both taught at the school, took the role of choirmaster and began his career as a biblical scholar under the tutelage of Abbots John Chapman and Christopher Butler. From 1943 he took advantage of Divino afflante Spiritu, the papal encyclical of Pope Pius XII, which for the first time permitted modern methods of biblical criticism to be employed by Catholics, to embark upon A Catholic Commentary on Holy Scripture, eventually published in 1951.
St. Benedict's School
After 13 years at Downside, then-Abbot Sigebert Trafford instructed Orchard to take on the headship of Ealing Priory School. The school, which had been established in 1902 as a dependency of Downside, was by 1945 in a state in which closure rather than growth seemed the more likely prospect. Orchard, however, threw himself into the task of revitalising the school, which he renamed St Benedict's School, and by 1947 succeeded in achieving recognition by the Ministry of Education as efficient (thus enabling it to participate in the teachers’ pension scheme).
In 1951 Orchard was admitted to the Headmasters' Conference, giving St Benedict's the status of a public school, the only Catholic day school to achieve this position. By 1959, Abbot Rupert Hall of the by-then independent Ealing Abbey, was concerned that Orchard's ambitions for the school exceeded the financial capability of the monastic community, and requested that Orchard resign his position as headmaster in 1960. The death of his successor after just one term and the resignation of his successor after five years resulted in Orchard being called upon to resume the headship of the school in 1965, a position he held until a further dispute over his ambitions for expansion led to his resignation a second time in 1969.
After completing his biblical commentary in 1951, and in addition to his headmaster’s duties, Orchard embarked with Reginald C. Fuller, his erstwhile fellow Ealing Priory pupil, on producing a new translation of the Bible, suitable for both liturgical and academic use, which was published in 1967. Aged 60, free from stewardship of the school, Orchard resumed his career as a biblical scholar in earnest. He participated in the establishment in 1969 and was the second General Secretary (1970–1972) of the World Catholic Federation and, displaying the same vigour evident in his revival of St Benedict's School, organised and financed a series of international conferences on the Gospels. During the 1970s he spent four years as spiritual director of the Beda College in Rome and took up the position of Visiting Professor of New Testament Studies at the University of Dallas (in Dallas, Texas) before returning to Ealing for the remainder of his life.
Following in the footsteps of his mentor Christopher Butler, Orchard promulgated, in the face of general scholarly scepticism, the Griesbach hypothesis, which he renamed the Two-Gospel Hypothesis, which maintained that the Gospel of Matthew was the first and the Gospel of Mark the third, being a synthesis of Matthew's Gospel and the Gospel of Luke. Into his old age he remained a familiar face in biblical circles, lecturing worldwide in support of his hypothesis. Aged 95, he publicly declined the invitation of Cormac Murphy-O'Connor, the Archbishop of Westminster to attend a lecture which would support the priority of Mark's Gospel. Orchard's researches and ideas, regarding the gospels, have been saved on www.churchinhistory.org 
After leading the chant at midday on 28 November 2006, Orchard, aged 96, prayed at the bedside of the dying Dom Kevin Horsey. They were the last survivors of the Ealing community before it became independent in 1947. They died within hours of each other that night.
This section lacks ISBNs for the books listed in it. (March 2014)
- A Catholic Commentary on Holy Scripture (1951; editor)
- Catholic Edition of the Revised Standard Version of the Bible, (co-editor, with Rev Reginald C. Fuller), London (1967)
- The Common Bible (co-editor, with Rev. Reginald C. Fuller), London (1973)
- Matthew, Luke & Mark, Koinonia Press, Manchester (1976)
- A New Catholic Commentary, (General Editor), London (1969)
- Synopsis of the Four Gospels in English (1982)
- Synopsis of the Four Gospels in Greek (1983),
- The Order of the Synoptics (with H. Riley) (1987)
- Born to be King - The Epic of the Incarnation (A theological application of the Matthean Priority Hypothesis), Ealing Abbey Scriptorium, London (1993)
- The Origin and Evolution of the Gospels, Ealing Abbey Scriptorium, London 1993
This section lacks ISBNs for the books listed in it. (March 2014)
- "Thessalonians and the Synoptic Gospels", Biblica 19 (1938) 19-42
- "The Rejection of Christ", Downside Review LVI (1938) 410-26
- "The Persecution of Christ", Downside Review LVII (1939) 189-98
- "The Two Year Public Ministry Viewed and Reviewed", Downside Review LVII (1939) 308-39
- "St Paul and the Book of Daniel", Biblica 20 (1939) 172-79
- "A Note on the Meaning of Galatians 2: 3-5", Journal of Theological Studies, Vol 43 (1942) 173-77
- "A New Solution of the Galatians Problem", Bulletin of the John Rylands Library No. 28 (1944) 154-74
- "The Problem of Acts and Galatians", Catholic Biblical Quarterly: 7 (1945) 377-97
- "Prayers We have in Common: The Biblical Aspect", Worship 47 No. 3 (March 1973) 144-49
- "The Meaning of ton epiousion (Mt 6:11 = Lk 11:3)", Biblical Theology Bulletin III-3 (1973), 274-82
- "The Ellipsis between Galatians 2:3 and 2:4", Biblica 54 (1973) 469-81
- "Priestly Training according to the Gospels", Omnis Terra (English Edition): 58 (February 1974)
- "Once again the Ellipsis between Galatians 2:3 and 2:4", Biblica 57 (1976) 254-55
- "John A. T. Robinson and the Synoptic Problem", New Testament Studies 22 (1975–76) 346-452
- "JJ Griesbach: Synoptic and Text Critical Studies 1776-1976", Society for New Testament Studies, (1978)
- "Are All Gospel Synopses Biased?", Theologische Zeitschrift: 34 (1978) 149-62
- "Ellipsis and Parenthesis in Gal 2:1-10 and 2 Thess 2:1-12", Paul de Tarse - Apotre de Notre Temps (Rome: Basilica di San Paulo-f-1-m, (1979))
- "Some Guidelines for the Interpretation of Eusebius H.E. Ill 34-39", Festschrift in Honour of Bo Reicke, Basle (1979)
- "Why THREE Synoptic Gospels?", Irish Theological Quarterly: 46 No. 4 (1979)
- "The Solution of the Synoptic Problem", Scripture Bulletin, XVIII, No. 1. Winter (1987)
- "The Formation of the Synoptic Gospels", Downside Review, Vol. 106 No. 362 (Jan 1988) 1-16
- "The Evolution of the Gospels", Catholic Truth Society Publications (CTS SC60), London (1990)
- "Response to H. Merkel" (Ancient Patristic Testimony to the Gospels), The Interrelations of the Gospels (ed. David L Dungan), Leuven 1990, 591-604
- Mark and the Fusion of Traditions, The Four Gospels - Festschrift Frans Neirynck, Leuven (1992), 779-800
- "The Making and Publication of Mark's Gospel: An Historical Investigation", Annales Theologici 1 (1993), 369-93
- "The Origin and Evolution of the Gospels", (1993)
- "The Publication of Mark's Gospel", The Synoptic Gospels - Source Criticism and The New Literary Criticism (ed. Camille Focant, Leuven, 1993), 518-20
- "Josephus and the Unnamed Priests of his Roman Mission", Downside Review Vol. 113], No. 393 (October 1995) 248-70
- "Dei Verbum and the Synoptic Gospels", This Rock (1996)
- "The Bethrothal and Marriage of Mary to Joseph", Homiletic and Pastoral Review, Volume CII, No 1 (October 2001)
- "The Bethrothal and Marriage of Mary to Joseph", Homiletic and Pastoral Review, Volume CII, No 2 (November 2001)
- "Dom Bernard Orchard". The Telegraph. 8 December 2006. Retrieved 30 May 2008.