Question: What University was John Appleton (aka John de Appleton) a Master of?

full_context: Document 1: John Appleton (academic): John Appleton (aka John de Appleton) was a Master of University College, Oxford, England.
Document 2: Appleby College: Appleby College is an international independent school (grades 7-12) located in Oakville, Ontario, Canada, founded in 1911 by John Guest, a former Headmaster of the Preparatory School at Upper Canada College. Guest dreamed of establishing a small boarding school in the country, and did so with the support and financial assistance of Sir Byron Edmund Walker, a prominent Canadian businessman and patron of the arts. Today, Appleby is a co-educational day and boarding university-preparatory school, with a curriculum based around the liberal arts. It is situated on Lake Ontario in Oakville, Ontario, roughly 50 kilometres west of Toronto. Students are drawn primarily from Oakville, Burlington and Mississauga, but boarding students come from other parts of Canada and throughout all continents of the world. Appleby is the only Canadian member of the G20 Schools. It is also a member of the International Round Square Organisation and the Canadian Independent Schools Athletic Association. Appleby is accredited by the Canadian Educational Standards Institute. On October 13, 2006, "Maclean's Magazine" named Appleby one of Canada's Top 100 Employers. Appleby is the first high school ever to receive this distinction.
Document 3: Faculty of History, University of Oxford: The Faculty of History at the University of Oxford organises that institution's teaching and research in modern history. Medieval and Modern History has been taught at Oxford for longer than at virtually any other University, and the first Regius Professor of Modern History was appointed in 1724. The Faculty is part of the Humanities Division, and has been based at the former City of Oxford High School for Boys on George Street, Oxford since the summer of 2007, while the department's Library was removed from the former Indian Institute on Catte Street to the main Bodleian buildings at the start of 2013.
Document 4: University College, Oxford: University College (in full The Master and Fellows of the College of the Great Hall of the University of Oxford, colloquially referred to as "Univ"), is a constituent college of the University of Oxford in England. It has a claim to being the oldest college of the university, having been founded in 1249 by William of Durham.
Document 5: Durham University: Durham University (legally the University of Durham) is a collegiate public research university in Durham, North East England, with a second campus in Stockton-on-Tees. It was founded by an Act of Parliament in 1832 and granted a Royal Charter in 1837. It was one of the first universities to commence tuition in England for more than 600 years and is one of a number of institutions that has been described as the third-oldest university in England. The Durham University estate includes 63 listed buildings, ranging from the 11th-century Durham Castle to a 1930s Art Deco Chapel. The university also owns and manages the Durham World Heritage Site in partnership with Durham Cathedral. The university's ownership of the World Heritage Site includes Durham Castle, Palace Green, and the surrounding buildings including the historic Cosin's Library.
Document 6: Jon Appleton: Jon Howard Appleton (born January 4, 1939) is an American composer and teacher who was a pioneer in electro-acoustic music. His earliest compositions in the medium, e.g. Chef d'Oeuvre and Newark Airport Rock attracted attention because they established a new tradition some have called programmatic electronic music. In 1970 he won Guggenheim, Fulbright and American-Scandinavian Foundation fellowships. When he was twenty-eight years old he joined the faculty of Dartmouth College where he established one of the first electronic music studios in the United States. He remained there intermittently for forty-two years. In the mid-1970s he left Dartmouth to briefly become the head of Elektronmusikstudion (EMS) in Stockholm, Sweden. In the late 1970s, together with Sydney Alonso and Cameron Jones he helped develop the first commercial digital synthesizer called the Synclavier. For a decade he toured around the United States and Europe performing the compositions he composed for this instrument. In the early 1990s he helped found the Theremin Center for Electronic Music at the Moscow Conservatory of Music where he continues to teach once a year. He has also taught at Keio University (Mita) in Tokyo, Japan, CCRMA at Stanford University and the University of California Santa Cruz. In his later years he has devoted most of his time to the composition of instrumental and choral music in a quasi-Romantic vein which has largely been performed only in France, Russia and Japan.
Document 7: University of Oxford: The University of Oxford (informally Oxford University or simply Oxford) is a collegiate research university located in Oxford, England. It has no known date of foundation, but there is evidence of teaching as far back as 1096, making it the oldest university in the English-speaking world and the world's second-oldest university in continuous operation. It grew rapidly from 1167 when Henry II banned English students from attending the University of Paris. After disputes between students and Oxford townsfolk in 1209, some academics fled north-east to Cambridge where they established what became the University of Cambridge. The two "ancient universities" are frequently jointly referred to as "Oxbridge".
Document 8: University College Dublin: University College Dublin (commonly referred to as UCD) (Irish: "An Coláiste Ollscoile, Baile Átha Cliath" ) is a research university in Dublin, Ireland. It has over 1,482 faculty and 32,000 students, and it is Ireland's largest university. The university originates in a body founded in 1854 with John Henry Newman as the first rector known as the Catholic University of Ireland, re-formed in 1880 and chartered in its own right in 1908. The Universities Act, 1997 renamed the "constituent university" as the "National University of Ireland, Dublin", and a ministerial order of 1998 renamed the institution as "University College Dublin - National University of Ireland, Dublin".
Document 9: John Appleton (disambiguation): John Appleton (1815–1864) was an American Assistant Secretary of State and Democratic Party politician from Maine.
Document 10: New College, Oxford: New College is one of the constituent colleges of the University of Oxford in the United Kingdom. Founded in 1379 by William of Wykeham, the full name of the college is The Warden and Scholars of St Mary's College of Winchester in Oxford. The name "New College", however, soon came to be used following its completion in 1386 to distinguish it from the older existing college of St. Mary, now known as Oriel College.
Document 11: John Appleton Wilson: John Appleton Wilson (October 7, 1851 in Baltimore, Maryland – April 17, 1927 in Baltimore) was an American architect.
Document 12: Exeter College, Oxford: Exeter College (in full: The Rector and Scholars of Exeter College in the University of Oxford) is one of the constituent colleges of the University of Oxford in England and the fourth oldest college of the University.
Document 13: John Appleton: John Appleton (February 11, 1815 – August 22, 1864) was an American lawyer, politician and diplomat who served as the United States' first "chargé d'affaires" to Bolivia, and later as special envoy to Great Britain and Russia. Born in Beverly, Massachusetts, Appleton graduated from Bowdoin College in 1834 and attended Harvard Law School from 1835 to 1836. On leaving Harvard, he became a barrister and newspaper editor while maintaining a vigorous involvement in Democratic politics. In 1840 he was appointed as registrar of probates for Cumberland County, Maine, and in 1845 became Chief Clerk for the United States Department of the Navy.
Document 14: University of Cambridge: The University of Cambridge (informally Cambridge University) is a collegiate public research university in Cambridge, England. Founded in 1209 and granted a royal charter by King Henry III in 1231, Cambridge is the second-oldest university in the English-speaking world and the world's fourth-oldest surviving university. The university grew out of an association of scholars who left the University of Oxford after a dispute with the townspeople. The two medieval universities share many common features and are often referred to jointly as "Oxbridge".
Document 15: Michael Appleton: Michael Antony Appleton (born 4 December 1975) is an English football coach and former player who is currently the assistant manager of Leicester City.
ground_truth: was a Master of University College, Oxford, England.