question: What is the date of death of Ann Maria Bradshaw's husband?
context: [["Ann Maria Bradshaw", ["Ann Maria Bradshaw (1801\u20131862), was an English actress and vocalist.", "Bradshaw was born in London in August 1801.", "Her maiden name was Tree, and", "her father, who lived in Lancaster Buildings, St. Martin's Lane, was in the East India House.", "After a training in the chorus at Drury Lane Theatre, and a short experience in Bath, she appeared in 1818 at Covent Garden Theatre as Rosina in 'The Barber of Seville.'", "Subsequently she played, principally as a substitute for Miss Foote or Miss Stephens, Patty in 'The Maid of the Mill,' Susannah in 'The Marriage of Figaro,' and other similar characters.", "Her first recorded appearance in an original role seems to have been as Princess Stella in the 'Gnome King,' a spectacular piece produced on 6 October 1819 at Covent Garden.", "On 11 December of the same year she appeared as Luciana in an opera founded by Reynolds on 'The Comedy of Errors.'", "This led to the series of Shakespearean performances on which her fame rests.", "In various renderings, musical and otherwise, of Shakespearean comedy, she played with success Ariel, Viola, Imogen, Julia (in the 'Two Gentlemen of Verona'), Ophelia, and Rosalind.", "With the exception of a solitary appearance at Drury Lane in April 1823, when she was lent by her own management, she appears to have remained at Covent Garden till her retirement.", "This took place on 15 June 1825 in two of her original characters, Mary Coppin 'Charles II,' by Howard Payne, and Clari in the opera of that name, by the same author.", "Shortly afterwards she married, under passably romantic circumstances, and after, it is said, an attempt at suicide, James Bradshaw, a man of property, they had a daughter, Harriet Maria.", "She died on 18 February 1862.", "Of medium stature and pleasing figure, and with no special claim to beauty, she owed her popularity to the pathos in her voice.", "Though inferior to her singing, her acting won commendation.", "She was much praised for the modesty of her performance in male attire.", "Her sister, Ellen Tree, became the wife of Mr. Charles Kean."]], ["Etan Boritzer", ["Etan Boritzer( born 1950) is an American writer of children \u2019s literature who is best known for his book\" What is God?\" first published in 1989.", "His best selling\" What is?\" illustrated children's book series on character education and difficult subjects for children is a popular teaching guide for parents, teachers and child- life professionals.", "Boritzer gained national critical acclaim after\" What is God?\" was published in 1989 although the book has caused controversy from religious fundamentalists for its universalist views.", "The other current books in the\" What is?\" series include", "What is Love?,", "What is Death?,", "What is Beautiful?,", "What is Funny?,", "What is Right?,", "What is Peace?,", "What is Money?,", "What is Dreaming?,", "What is a Friend?,", "What is True?,", "What is a Family?,", "What is a Feeling?\"", "The series is now also translated into 15 languages.", "Boritzer was first published in 1963 at the age of 13 when he wrote an essay in his English class at Wade Junior High School in the Bronx, New York on the assassination of John F. Kennedy.", "His essay was included in a special anthology by New York City public school children compiled and published by the New York City Department of Education.", "Boritzer now lives in Venice, California and maintains his publishing office there also.", "He has helped numerous other authors to get published through\" How to Get Your Book Published!\" programs.", "Boritzer is also a yoga teacher who teaches regular classes locally and guest- teaches nationally.", "He is also recognized nationally as an erudite speaker on\" The Teachings of the Buddha.\""]], ["James Bradshaw (British politician)", ["James Bradshaw (31 May 1793 \u2013 4 March 1847) was a British Tory and later Conservative Party politician in the United Kingdom.", "He sat as Member of Parliament (MP) for Berwick-upon-Tweed from 1835 to 1837 and for Canterbury from 1837 to 1847.", "Bradshaw was born 31 May 1793, the son of James Bradshaw and Harriet Fitzhugh.", "Following his father's death, his mother Harriet became Lady Harriet Peyton when she married Sir Henry Peyton, 2nd Baronet.", "In 1825, he married the actress Ann Maria Tree, they had one daughter.", "He died at his home in London on 4 March 1847 after a long and painful illness."]], ["Fred Bradley (rower)", ["Frederick Bradley( 1908- date of death unknown) was an English rower."]], ["Harry Wainwright (footballer)", ["Harry Wainwright( born 1899; date of death unknown) was an English footballer."]], ["Theodred II (Bishop of Elmham)", ["Theodred II was a medieval Bishop of Elmham.", "The date of Theodred's consecration unknown, but the date of his death was sometime between 995 and 997."]], ["Thomas Scott (diver)", ["Thomas Scott( 1907- date of death unknown) was an English diver."]], ["Bill Smith (footballer, born 1897)", ["William Thomas Smith( born 9 April 1897, date of death unknown) was an English professional footballer."]], ["Harry Johnson (wrestler)", ["Harry Johnson( 1903- date of death unknown) was an English wrestler."]], ["Albert Thompson (footballer, born 1912)", ["Albert Thompson( born 1912, date of death unknown) was a Welsh footballer."]]]
supporting_facts: [["Ann Maria Bradshaw", 12], ["James Bradshaw (British politician)", 0]]
evidences: [["Ann Maria Bradshaw", "spouse", "James Bradshaw"], ["James Bradshaw", "date of death", "4 March 1847"]]
answer: 4 March 1847