question: The Quest of Erebor was published by the third son of which novelist?
answer: J. R. R. Tolkien
context: Title: Anson baronets
  Passage: The Anson Baronetcy, of Birch Hall in the County of Lancaster, is a title in the Baronetage of the United Kingdom held by a branch of the Anson family.  It was created on 30 September 1831 for William Anson.  He was the third son of George Anson; his elder brothers were Thomas Anson, 1st Viscount Anson and General Sir George Anson.  Sir William was the uncle of Thomas Anson, 1st Earl of Lichfield and Major-General George Anson and the great-nephew of George Anson, 1st Baron Anson (see Earl of Lichfield, 1831 creation for more information on the Anson family).  His grandson, the third Baronet, was a lawyer and Liberal Unionist politician.  He never married and was succeeded by his nephew, the fourth Baronet.  He was the only son of Frederick Arthur Anson, third son of the second Baronet.  The fourth baronet drowned in the Thames in July 1914, aged only twenty-five.  He had not married and on his death the title passed to his first cousin, the fifth Baronet, the eldest son of Rear-Admiral Algernon Horatio Anson (1854–1913), fourth and youngest son of the second Baronet.  He was killed in action in the First World War.  He was unmarried and was succeeded by his younger brother, the sixth Baronet.  As of 2007 the title is held by the latter's son, the seventh Baronet, who succeeded in 1951.  He is a retired Rear-Admiral in the Royal Navy.
  Title: Christopher Tolkien
  Passage: Christopher John Reuel Tolkien (born 21 November 1924) is the third son of the author J. R. R. Tolkien (1892–1973), and the editor of much of his father's posthumously published work.  He drew the original maps for his father's "The Lord of the Rings", which he signed C. J. R. T.
  Title: Duke of Bedford
  Passage: Duke of Bedford (named after Bedford, England) is a title that has been created six times (for five distinct people) in the Peerage of England.  The first and second creations came in 1414 in favour of Henry IV's third son, John, who later served as regent of France.  He was made Earl of Kendal at the same time and was made Earl of Richmond later the same year.  The titles became extinct on his death in 1435.  The third creation came in 1470 in favour of George Neville, nephew of Warwick the Kingmaker.  He was deprived of the title by Act of Parliament in 1478.  The fourth creation came 1478 in favour of George, the third son of Edward IV.  He died the following year at the age of two.  The fifth creation came in 1485 in favour of Jasper Tudor, half-brother of Henry VI and uncle of Henry VII.  He had already been created Earl of Pembroke in 1452.  However, as he was a Lancastrian, his title was forfeited between 1461 and 1485 during the predominance of the House of York.  He regained the earldom in 1485 when his nephew Henry VII came to the throne and was elevated to the dukedom the same year.  He had no legitimate children and the titles became extinct on his death in 1495.
  Title: The Quest of Erebor
  Passage: "The Quest of Erebor" is a work of fantasy fiction by J. R. R. Tolkien, posthumously published by his son Christopher Tolkien in "Unfinished Tales" (1980).  This work explains how and why Gandalf arranged for the retaking of the Lonely Mountain ("Erebor" in Sindarin), an adventure recounted from the perspective of Bilbo Baggins many years before in Tolkien's "The Hobbit".
citations: Christopher Tolkien The Quest of Erebor