Question: On which date did Anne Fitzalan-Howard, Duchess of the region containing Irstead die?

full_context: Document 1: Irstead: Irstead is a village in the English county of Norfolk, England. The village is situated at Irstead Shoals, on the River Ant just south of Barton Broad, the second largest of the Norfolk Broads. The village forms part of the civil parish of Barton Turf and the district of North Norfolk.
Document 2: Anne Boleyn: Anne's family also profited from the relationship. Her father, already Viscount Rochford, was created Earl of Wiltshire. Henry also came to an arrangement with Anne's Irish cousin and created him Earl of Ormond. At the magnificent banquet to celebrate her father's elevation, Anne took precedence over the Duchesses of Suffolk and Norfolk, seated in the place of honour beside the King which was usually occupied by the Queen. Thanks to Anne's intervention, her widowed sister Mary received an annual pension of £100, and Mary's son, Henry Carey, was educated at a prestigious Cistercian monastery.
Document 3: River Yeo (South Somerset): The River Yeo, also known as the River Ivel, is a tributary of the River Parrett in north Dorset and south Somerset, England.
Document 4: Anne Fitzalan-Howard, Duchess of Norfolk: Anne Mary Teresa Fitzalan-Howard, Duchess of Norfolk, ("née" Constable-Maxwell; 30 August 1927 – 8 April 2013) was a British peeress and humanitarian.
Document 5: Queen Elizabeth The Queen Mother: Elizabeth Angela Marguerite Bowes - Lyon (4 August 1900 -- 30 March 2002) was the wife of King George VI and the mother of Queen Elizabeth II and Princess Margaret, Countess of Snowdon. She was Queen consort of the United Kingdom and the Dominions from her husband's accession in 1936 until his death in 1952, after which she was known as Queen Elizabeth The Queen Mother, to avoid confusion with her daughter. She was the last Empress of India.
Document 6: Anne, Princess Royal and Princess of Orange: Anne, Princess Royal and Princess of Orange (2 November 1709 – 12 January 1759) was the second child and eldest daughter of King George II of Great Britain and his consort Caroline of Ansbach. She was the spouse of William IV, Prince of Orange, the first hereditary stadtholder of all seven provinces of the Northern Netherlands. She was Regent of the Netherlands from 1751 until her death in 1759, exercising extensive powers on behalf of her son William V. She was known as an Anglophile, due to her English upbringing and family connections, but was unable to convince the Dutch Republic to enter the Seven Years' War on the side of the British. Princess Anne was the second daughter of a British sovereign to hold the title Princess Royal. In the Netherlands she was sometimes known as Anna van Hannover.
Document 7: Earsham: Earsham is a small village in Norfolk, England. Its postal town is the nearby Bungay, Suffolk. It covers an area of and had a population of 907 in 357 households at the 2001 census, the population falling to 882 at the 2011 census.
Document 8: Stratton Strawless: Stratton Strawless is a village in the county of Norfolk and district of Broadland. The civil parish covers and has a population of 495, increasing to a population of 580 in the 2011 Census. Located close and to the east of the A140 road and being south of the market town of Aylsham and some north of Norwich. Much of the parish has been given over to the growing of arable crops, but there are substantial amounts of mixed woodland to be found.
Document 9: English River (Iowa): The English River is a tributary of the Iowa River in southeastern Iowa in the United States. The main stem of the river is long. Including its longest headwaters tributary, the North English River, the total length increases to . Via the Iowa River, it is part of the Mississippi River watershed. The Deep River is a minor tributary of the English River. The towns of North English, South English and Deep River are named for the English and Deep rivers.
Document 10: Antingham: Antingham is a village and civil parish in the north of the English county of Norfolk. The village is located about south of Cromer and north of North Walsham. The civil parish has an area of 6.12 square kilometres and in the 2001 census had a population of 287 in 120 households, the population increasing to 355 at the 2011 Census. For the purposes of local government, the parish falls within the district of North Norfolk.
Document 11: Sophia of Hanover: Although considerably older than Queen Anne, Sophia enjoyed much better health. According to the Countess of Bückeburg in a letter to Sophia's niece, the Raugravine Luise, on 5 June 1714 Sophia felt ill after receiving an angry letter from Queen Anne. Two days later she was walking in the gardens of Herrenhausen when she ran to shelter from a sudden downpour of rain and collapsed and died, aged 83—a very advanced age for the era. Just over a month later, in August, Queen Anne died at the age of 49. Had Anne predeceased Sophia, Sophia would have been the oldest person to ascend the British throne.
Document 12: Anne, Princess Royal: At the age of 21, Anne won the individual title at the European Eventing Championship, and was voted the BBC Sports Personality of the Year in 1971. For more than five years, she also competed with the British eventing team, winning a silver medal in both individual and team disciplines in the 1975 European Eventing Championship, riding the home - bred Doublet. The following year, Anne participated in the 1976 Olympic Games in Montreal as a member of the British team, riding the Queen's horse, Goodwill. Anne assumed the Presidency of the Fédération Équestre Internationale from 1986 until 1994. On 5 February 1987, she became the first member of the Royal Family to appear as a contestant on a television quiz - show when she competed on the BBC panel game A Question of Sport.
Document 13: Anne Devereux: She was born in Bodenham, the daughter of Sir Walter Devereux, the Lord Chancellor of Ireland, and his wife Elizabeth Merbury. Anne's grandfather, Walter, was the son of Agnes Crophull. By Crophull's second marriage to Sir John Parr, Anne was a cousin to the Parr family which included Sir Thomas Parr; father of King Henry VIII's last queen consort, Catherine Parr.
Document 14: Salhouse: Salhouse is a village and civil parish in the Broads in the English county of Norfolk. It lies south of the River Bure and Salhouse Broad, about north-east of Norwich. The civil parish has an area of and in the 2001 census had a population of 1,462 in 604 households, increasing to 1,486 in 638 households at the 2011 Census. For the purposes of local government, the parish falls within the district of Broadland although areas adjoining the river and broad fall into the executive area of the Broads Authority.
Document 15: River Yare: Yare River The river at Thorpe Green, Norwich Country England Region Norfolk Part of River Wensum Source - location west of Shipdham - elevation 79 m (259 ft) - coordinates 52 ° 37 ′ 11 ''N 0 ° 50 ′ 19'' E ﻿ / ﻿ 52.6196 ° N 0.8386 ° E ﻿ / 52.6196; 0.8386 Mouth Breydon Water - location Burgh Castle - elevation 0 m (0 ft) - coordinates 52 ° 35 ′ 17 ''N 1 ° 38 ′ 33'' E ﻿ / ﻿ 52.58798 ° N 1.64262 ° E ﻿ / 52.58798; 1.64262 Coordinates: 52 ° 35 ′ 17 ''N 1 ° 38 ′ 33'' E ﻿ / ﻿ 52.58798 ° N 1.64262 ° E ﻿ / 52.58798; 1.64262 Length 83.5 km (52 mi) Location of the river mouth within Norfolk
ground_truth: 8 April 2013
sub_queries: Irstead >> located in the administrative territorial entity Answer: Norfolk
On which date did Anne Fitzalan-Howard, Duchess of Norfolk die? Answer: 8 April 2013