Adrian Henry Timothy Knottesford Fortescue (14 January 1874 – 11 February 1923) was an English Catholic priest and polymath.

An influential liturgist, artist, calligrapher, composer, polyglot, amateur photographer, Byzantine scholar, and adventurer, he was also the founder of the Church of St Hugh of Lincoln in Letchworth.

[1] At the time of his death, Fortescue was professor of church history at St Edmund's College, Ware, the oldest Catholic school in England.

[1] After a number of temporary positions, interrupted by his doctoral examinations, Fortescue was eventually appointed Missionary Rector of Letchworth in Hertfordshire in November 1907.

Much of the church he designed and paid for personally, and parish records show that he in fact donated more each year than he received in his annual stipend.

[1] The best-known of Fortescue's publications during his lifetime was Ceremonies of the Roman Rite Described,[8] which he actually wrote not out of academic interest but to raise funds for construction on his church.

[1] In 1913 Fortescue compiled a book of Latin Hymns which he originally gathered for the use of his parishioners, providing his own English prose translations.