The Dean of Durham is the "head" ("primus inter pares" – first among equals) and chair of the Chapter, the ruling body of Durham Cathedral.
 The dean and chapter are based at the "Cathedral Church of Christ, Blessed Mary the Virgin and St Cuthbert of Durham" in Durham.
 The cathedral is the mother church of the Diocese of Durham and seat of the Bishop of Durham.
The Cathedral Church of Christ, Blessed Mary the Virgin and St Cuthbert of Durham, usually known as Durham Cathedral and home of the Shrine of St Cuthbert, is a cathedral in the city of Durham, England, the seat of the Anglican Bishop of Durham.
 The bishopric dates from 995, with the present cathedral being founded in AD 1093.
 The cathedral is regarded as one of the finest examples of Norman architecture and has been designated a UNESCO World Heritage Site along with nearby Durham Castle, which faces it across Palace Green.
Palace Green is an area of grass in the centre of Durham, England, flanked by Durham Cathedral and Durham Castle.
 The Cathedral and Castle together form a UNESCO World Heritage Site.
Andrew Tremlett (born 1964) is a British Church of England priest.
 Since July 2016, he has served as Dean of Durham, and is therefore the head of the Chapter of Durham Cathedral and the most senior priest in the Diocese of Durham.
 Previously, he was a Canon Residentiary of Westminster Abbey (2010-2016), Rector of St Margaret's Church, Westminster (2010-2016), Archdeacon of Westminster (2014-2016), and Sub-Dean of the Westminster Abbey (2014-2016).
 He was also a Canon Residentiary at Bristol Cathedral (2008-2010).
The Durham Dean and Chapter Library (also Durham Cathedral Library) is located in Durham Cathedral, Durham, England.
 Founded in 995 AD, it is one of the largest English cathedral libraries.
 William de St-Calais donated 46 books In the 19th century it was located in the "Old Frater House", or "Monk's Hall", on the south side of the cathedral's cloisters, situated there in 1680 by the Dean of Durham John Sudbury, who fitted up the building.
The Diocese of Durham is a Church of England diocese, based in Durham, and covering the historic County Durham (and therefore including the part of Tyne and Wear south of the River Tyne, and excluding southern Teesdale).
 It was created in AD 635 as the Diocese of Lindisfarne.
 The cathedral is Durham Cathedral and the bishop is the Bishop of Durham who used to live at Auckland Castle, Bishop Auckland, and still has his office there.
 The diocese's administrative centre, the Diocesan Office, is located at Cuthbert House, Stonebridge just outside Durham City.
 This was opened in 2015.
Newport Cathedral (Welsh: "Eglwys Gadeiriol Casnewydd" ) is the cathedral of the Diocese of Monmouth, in the Church in Wales, and seat of the Bishop of Monmouth.
 Located in the city of Newport in South East Wales, its full title is Newport Cathedral of St. Woolos, King & Confessor.
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.
Sir John Dykes Bower CVO (13 August 19051981) was an English cathedral organist, who served in Truro Cathedral, Durham Cathedral and St Paul's Cathedral.
Francesca Massey took up the post of Sub-Organist at Durham Cathedral in 2011, where, in addition to the daily provision of music for services and training of the choristers, she regularly accompanies the cathedral choir in concerts, tours, broadcasts and recordings.
 Born in Birmingham, Francesca was educated at Cambridge University and the Royal Northern College of Music (on a prestigious ABRSM Scholarship).
 She has held Organ Scholarships at St George's Chapel, Windsor Castle, Gonville and Caius College, Cambridge and Manchester Cathedral, and was Assistant Organist at Great St Mary's Church, Cambridge and Assistant Director of Music at Peterborough Cathedral.

Question: Which cathedral is in Wales, Durham Cathedral or Newport Cathedral?
Answer: Newport Cathedral