William Henry Bliss

William Henry Bliss (26 April 1835 – 8 March 1911) was an English scholar and Anglican convert to Catholicism.

Bliss was born in Newton St Loe, Bath, Somerset. He was the son of Rev. William Bliss and Jane Monck (born Jane Bridges). Bliss was the grandson of Dr John Bliss M.D., a physician who specialised in the treatment of gout. The family owned a tweed mill (Bliss Tweed Mill) at Chipping Norton, Oxfordshire.

He was educated at Winchester from 1847 to 1852. He then went up to Magdalen College, Oxford, graduating with a Bachelor of Arts in 1859 (receiving his M.A. in 1863. In 1868 he was awarded a BCL.

In 1854, he edited The Parson.

On 4 May 1859 he married Mary Jane Wray, daughter of Rev. Cyril Wray of St. Martin's, Liverpool. Over twenty years they were to have eleven children.

Bliss suffered from a stammer. He therefore spent more than the usual time as a deacon. He was finally ordained by the Church of England in 1865. He served as Curate of Honington for four years from 1858, then moved to St James, Plymouth until 1865 and took the Vicarage of North Hinksey on the outskirts of Oxford in 1866.

In 1867 Bliss published his first major work, The Canons of the First Four General Councils, in Greek and English. It warranted a second edition in 1869.

Bliss appeared to have very good prospects within the established church. He was the son of a clergyman, was blessed with a good education and had very useful contacts. He was being published. However, at Oxford he came into contact with the Oxford Movement. This group of High Churchmen originally attempted to show that the Church of England was a direct descendant of the Church established by the apostles. Many members of the group converted to Catholicism, including John Henry Newman. Bliss became curate to his uncle James at Plymouth. His uncle was a leading Anglo-Catholic.

Bliss was increasingly turning towards Catholic theology and doubting the historical legitimacy of the Church of England. In 1869 he followed Newman into the Roman Catholic faith. He then secured the position of Keeper of Periodicals at the Bodleian Library in Oxford.

In 1877 the Public Record Office asked Bliss to go to Rome to do research in the Vatican Archives on its behalf. He accepted the offer and spent most of his time searching the mediaeval Papal Registers in order to find all the dealings between the Papacy and Great Britain and Ireland. This job required Bliss to spend nine months of each year in Rome and this became Bliss’ habit until he died at the Via Delphini in 1911. His wife raised the children in England and remained an Anglican.

At first the Papal bureaucrats were suspicious of an Englishmen. He won them over and by 1886 he was the English Tutor to Victor Emmanuel, heir to the Italian crown. He enjoyed cordial relations with the Italian Royal family.

In the Vatican Bliss produced a series called the Calendar of The Entries in the Papal Registers Relating to British Isles Volumes I and II. These were entirely Bliss's work. He edited volumes III, IV, and V with collaborators.

Bliss also studied the transcripts of manuscripts in Milan and Stockholm. His work from these cities is still available in the Public Record Office. Overall, his output is an important source of material for mediaeval historians.

Bliss is buried in Rome. His papers are kept at Downside Abbey.

• 1867 The Canons of the First Four General Councils
• 1894/95 Calendar of The Entries in the Papal Registers Relating to British Isles Volumes I and II
• 1896 Calendars of Petitions to the Pope Volume I, 1342–1419
• 1897 Calendar of The Entries in the Papal Registers Relating to British Isles Volume III (with C. Johnson).
• 1902 Calendar of The Entries in the Papal Registers Relating to British Isles Volume IV (with Jesse Alfred Twemlow)
• 1904 Calendar of The Entries in the Papal Registers Relating to British Isles Volume V (with J. A. Twemlow)
• 1913 Calendar of State Papers and Manuscripts Existing in the Archives Collections in Milan, Volume I 1385–1618

• "Public Record Office: Rome Archives Series I". National Archives. Retrieved 21 April 2014. 
• W. H. Bliss and C. Johnson (editors) (1897). "Regesta 138: 1344-1345". Calendar of Papal Registers Relating to Great Britain and Ireland, Volume 3: 1342-1362. Institute of Historical Research. Retrieved 21 April 2014.