Question: In what part of England does The Dean of Blackburn head the chapter of canons?

Context paragraphs:
Dean of Christ Church: The Dean of Christ Church is the dean of Christ Church Cathedral, Oxford and head of the governing body of Christ Church, a constituent college of the University of Oxford.  The cathedral is the mother church of the Church of England Diocese of Oxford and seat of the Bishop of Oxford.  The chapter of canons of the cathedral has formed the governing body of the college since its foundation, with the dean as "ex officio" head of the chapter and "ipso facto" head of the college.  Since 4 October 2014, the dean has been Martyn Percy.

Dean of Wakefield: The Dean of Wakefield is the head ("primus inter pares" – first among equals) and chair of the chapter of canons, the ruling body of Wakefield Cathedral.  The dean and chapter are based at the "Cathedral Church of All Saints Wakefield".  Before 2000 the post was designated as a provost, which was then the equivalent of a dean at most English cathedrals.  The cathedral is one of three co-equal mother churches of the Diocese of Leeds and a seat of the Bishop of Leeds.  The current dean is Jonathan Greener, presiding dean of the diocesan chapter.

Dean of Blackburn: The Dean of Blackburn is the head ("primus inter pares" – first among equals) and chair of the chapter of canons, the ruling body of Blackburn Cathedral.  The dean and chapter are based at the "Cathedral Church of Blackburn St Mary the Virgin with St Paul" in Blackburn.  Before 2000 the post was designated as a provost, which was then the equivalent of a dean at most English cathedrals.  The cathedral is the mother church of the Diocese of Blackburn and seat of the Bishop of Blackburn.

Dean of Derby: The Dean of Derby is the head ("primus inter pares" – first among equals) and chair of the chapter of canons, the ruling body of Derby Cathedral.  The dean and chapter are based at the "Cathedral Church of All Saints" in Derby.  Before 2000 the post was designated as a provost, which was then the equivalent of a dean at most English cathedrals.  The cathedral is the mother church of the Diocese of Derby of the Church of England and seat of the Bishop of Derby.

Dean of Windsor: The Dean of Windsor is the spiritual head of the Canons of St George's Chapel at Windsor Castle, England.  The Dean chairs meetings of the Chapter of Canons as "primus inter pares".  The post of dean of Wolverhampton was assimilated to the deanery of Windsor, around 1480.

Dean and Chapter of St Paul's: The Dean and Chapter of St Paul’s Cathedral was the titular corporate body of St Paul's Cathedral in London up to the end of the twentieth century.  It consisted of the dean and the canons, priests attached to the cathedral who were known as "prebendaries" because of the source of their income.  The Dean and Chapter (or "Greater Chapter") was made up of a large number of priests who would meet "in chapter", but such meetings were infrequent and the actual governance was done by the Administrative Chapter headed by the dean, made up of several senior "residentiary canons", who were also known as the "Dean and Canons of St Paul’s" or simply "The Chapter".

Dean of Bradford: The Dean of Bradford is the head and chair of the chapter of canons, the ruling body of Bradford Cathedral.  The dean and chapter are based at the "Cathedral Church of St Peter" in Bradford.  Before 2000 the post was designated as a provost, which was then the equivalent of a dean at most English cathedrals.  The cathedral is one of three co-equal mother churches of the Diocese of Leeds and a seat of the Bishop of Leeds; until 2014 it was the mother church of the now-defunct Diocese of Bradford and as such the seat of the diocesan Bishop of Bradford.  The current dean is Jerry Lepine.

Blackburn Cathedral: Blackburn Cathedral, officially known as the Cathedral Church of Blackburn Saint Mary the Virgin with St Paul, is an Anglican (Church of England) cathedral situated in the heart of Blackburn town centre, in Lancashire, England.  The cathedral site has been home to a church for over a thousand years and the first stone church was built there in Norman times.

Dean and Chapter of Ripon: The Dean and Chapter of Ripon Cathedral are the ecclesiastical governing body of Ripon Cathedral.  They consist of the dean and several canons meeting in chapter and are also (less frequently) known as the Dean and Canons of Ripon.

Dean and Chapter of Westminster: The Dean and Chapter of Westminster are the ecclesiastical governing body of Westminster Abbey, a collegiate church of the Church of England and royal peculiar in Westminster, Greater London.  They consist of the dean and several canons meeting in chapter and are also (less frequently) known as the Dean and Canons of Westminster.

Supporting paragraphs: Dean of Blackburn Blackburn Cathedral
Answer: Lancashire