Information:  - England is a country that is part of the United Kingdom. It shares land borders with Scotland to the north and Wales to the west. The Irish Sea lies northwest of England and the Celtic Sea lies to the southwest. England is separated from continental Europe by the North Sea to the east and the English Channel to the south. The country covers five-eighths of the island of Great Britain (which lies in the North Atlantic) in its centre and south; and includes over 100 smaller islands such as the Isles of Scilly, and the Isle of Wight.  - A civil war, also known as an intrastate war in polemology, is a war between organized groups within the same state or country, or, less commonly, between two countries created from a formerly united state. The aim of one side may be to take control of the country or a region, to achieve independence for a region or to change government policies. The term is a calque of the Latin "bellum civile" which was used to refer to the various civil wars of the Roman Republic in the 1st century BC.  - Henry of Blois (c. 1098 8 August 1171), often known as Henry of Winchester, was Abbot of Glastonbury Abbey from 1126, and Bishop of Winchester from 1129 to his death. He was a younger son of Stephen Henry, Count of Blois by Adela of Normandy, daughter of William the Conqueror and Matilda of Flanders. Thus, he was a younger brother of Stephen, King of England.  - William Ætheling (5 August 1103  25 November 1120), designated or titled Adelin (alternately rendered as "Adelinus", "Adelingus", "A(u)delin" or other Latinised Norman-French variants of "Ætheling"), was the son of Henry I of England by his wife Matilda of Scotland, and was thus heir apparent to the throne. His early death without issue caused a succession crisis, known in history as The Anarchy.  - The Bishop of Winchester is the diocesan bishop of the Diocese of Winchester in the Church of England. The bishop's seat ("cathedra") is at Winchester Cathedral in Hampshire.  - An Excellent Mystery is a mystery novel by Ellis Peters , the third of four set in the year 1141 , when so much occurred in the period known as the Anarchy . It is the 11th in the Cadfael Chronicles , published in 1985 ( 1985 in literature ) . The siege of Winchester sends monks streaming across England seeking safe haven . Two arrive at Shrewsbury Abbey . A young man seeks out the older of the two monks , wanting his approval to marry a young woman once meant for another , and she can not be found . His quest begins .  - Normandy (pronounced , Norman: "Normaundie", from Old French "Normanz", plural of "Normant", originally from the word for "northman" in several Scandinavian languages) is one of the regions of France, roughly corresponding to the historical Duchy of Normandy.  - Empress Matilda (c. 7 February 110210 September 1167), also known as the Empress Maude, was the claimant to the English throne during the civil war known as the Anarchy. The daughter of King Henry I of England, she moved to Germany as a child when she married the future Holy Roman Emperor Henry V. She travelled with her husband into Italy in 1116, was controversially crowned in St. Peter's Basilica, and acted as the imperial regent in Italy. Matilda and Henry had no children, and when Henry died in 1125, the crown was claimed by Lothair II, one of his political enemies.  - The Anarchy was a civil war in England and Normandy between 1135 and 1154, which resulted in a widespread breakdown in law and order. The conflict was a succession crisis precipitated by the accidental death of William Adelin, the only legitimate son of Henry I, in 1120. Henry's attempts to install his daughter, the Empress Matilda, as his successor were unsuccessful and on Henry's death in 1135, his nephew Stephen of Blois seized the throne with the help of another nephew, Henry of Blois, Bishop of Winchester. Stephen's early reign was marked by fierce fighting with English barons, rebellious Welsh leaders and Scottish invaders. Following a major rebellion in the south-west of England, Matilda invaded in 1139 with the help of her half-brother, Robert of Gloucester.  - Brother Cadfael is the main fictional character in a series of historical murder mysteries written between 1977 and 1994 by the linguist-scholar Edith Pargeter under the name "Ellis Peters". The character of Cadfael himself is a Welsh Benedictine monk living at the Abbey of St Peter and St Paul, in Shrewsbury, western England, in the first half of the 12th century. The historically accurate stories are set between about 1135 and about 1145, during "The Anarchy", the destructive contest for the crown of England between King Stephen and Empress Maud.  - Shrewsbury (or ) is the county town of Shropshire, England. It is on the River Severn and has a population of approximately 72,000.  - Winchester is a city and the county town of Hampshire, England. The city lies at the heart of the wider City of Winchester, a local government district, and is located at the western end of the South Downs National Park, along the course of the River Itchen. It is situated south-west of London and from Southampton, its closest city. At the time of the 2011 Census, Winchester had a population of 45,184. The wider City of Winchester district which includes towns such as Alresford and Bishop's Waltham has a population of 116,800     What entity does 'an excellent mystery' has the relation 'country of origin' with?
A:
wales