Question: Which part of Mordington   is a medieval estate occupying the lower part of Mordington parish in Berwickshire, Scottish Borders, Scotland, five miles (8 km) west of Berwick-upon-Tweed?

Context paragraphs:
Fishwick: Fishwick is a parish with a small mediaeval village (now vanished) in the Scottish Borders, in the traditional county of Berwickshire, seven miles from Berwick-upon-Tweed.  The parish church is now a ruin and the parish is united with Hutton and Paxton.  Today the parish consists of farms and scattered housing.  There is also an old WWII airstrip, still occasionally used.  Fishwick borders the north of the River Tweed which here constitutes the border with England.

Channelkirk: Channelkirk is a parish and community council area in the north-west corner of the historic county of Berwickshire in the Scottish Borders area of Scotland, forming the upper part of the ancient district of Lauderdale, while the parish of Lauder forms the lower part.  The Community Council has the name Oxton and Channelkirk, Oxton being the main village of the parish.  It was formerly in the Ettrick and Lauderdale district of Borders Region.

Mordington: Mordington is an agricultural parish in the extreme south-east of Berwickshire in the Scottish Borders region.  It is five miles from Berwick-upon-Tweed and borders Northumberland to the east, and south (where the boundary is the Whiteadder Water), Foulden to the west, and Lamberton to the north.  The parish is bisected by the A6105 Berwick to Duns road.  The lower part of the parish is covered by the Edrington estate.  It is possibly the warmest parish in Scotland; the annual hours of sunshine are said to be almost as high as at Dunbar, which records the most hours in Scotland.

Foulden, Scottish Borders: Foulden is a civil parish and village in the Berwickshire area of Scottish Borders, Scotland, situated not far above the Whiteadder Water, and 7 mi west of Berwick-upon-Tweed.

Robert Lauder of the Bass: Sir Robert Lauder of the Bass (before 1440 - c. January 1508) was a Scottish knight, armiger, and Governor of the Castle at Berwick-upon-Tweed.  He was also a member of the old Scottish Parliament.  The Lauders held the feudal barony of The Bass (the caput of which was its castle), East Lothian, Edrington Castle and lands in the parish of Mordington, Berwickshire, Tyninghame in Haddingtonshire (from the Archbishopric of St Andrews), and numerous other estates and properties elsewhere in Scotland.

Chirnside Parish Church: Chirnside Parish Church is a kirk of the Church of Scotland.  It is situated on the B6355 road between Duns and Eyemouth in the old county of Berwickshire, now part of the Scottish Borders, at grid reference [ NT869560] .  The town of Chirnside is 6 mi east of Duns, and 9 mi north-west of Berwick-upon-Tweed.

Edrington: Edrington is a medieval estate occupying the lower part of Mordington parish in Berwickshire, Scottish Borders, Scotland, five miles (8 km) west of Berwick-upon-Tweed.  From probably the 14th century, if not earlier, a castle occupied the steep hill above the mill of the same name on the Whiteadder Water.  The castle ruin is still marked on today's Ordnance Survey maps, and still appears in locality references in "The Berwickshire News".  The principal farm of the estate is Edrington Mains.

Eyemouth: Eyemouth (Scots: "Heymooth" ) is a small town and civil parish in Berwickshire, in the Scottish Borders area of Scotland.  It is 2 mi east of the main north-south A1 road and just 8 mi north of Berwick-upon-Tweed.  It has a population of about 3,420 people (2004).

Marchmont House: Marchmont House lies on the east side of the small town of Greenlaw, and near the former village of Polwarth in Berwickshire, in the Scottish Borders area of Scotland.  It is about five miles (8 km) south west of Duns, about 19 mi west of Berwick-upon-Tweed and about 40 mi south east of Edinburgh.  Situated in a gently undulating landscape, the estate is intersected by Blackadder Water, and its tributary burns.  With the Lammermuir Hills to the north and views towards the Cheviot Hills in the south, this part of Berwickshire, sometimes referred to as the Merse, is very scenic and contains rich and fertile agricultural land.

Paxton, Scottish Borders: Paxton is a small village near the B6461 and the B6460, in the pre-1975 ancient county of Berwickshire, now an administrative area of the Scottish Borders region of Scotland.  It lies 1 mile west of the border with Northumberland, near Berwick-upon-Tweed.  It is a traditional, country village surrounded by farmland, and its closest market towns are Duns and Berwick-upon-Tweed.

Supporting paragraphs: Mordington Edrington
Answer: Edrington