Montacute in the context of Gatehouse

A Glastonbury Romance was written by John Cowper Powys (1873–1963) in rural upstate New York and first published by Simon and Schuster in New York City in March 1932. An English edition published by John Lane followed in 1933. It has "nearly half-a-million words" and was described as "probably the longest undivided novel in English".

It is the second of Powys's Wessex novels, along with Wolf Solent (1929), Weymouth Sands (1934) and Maiden Castle (1936). Powys was an admirer of Thomas Hardy and these novels are set in Somerset and Dorset, parts of Hardy's mythical Wessex. The action occurs over roughly a year, and the first two chapters of A Glastonbury Romance take place in Norfolk, where the late Canon William Crow's will is read, and the Crow family learn that his secretary-valet John Geard has inherited his wealth. Also in Norfolk, a romance begins between cousins, John and Mary Crow. However, after an important scene at the ancient monument of Stonehenge, the rest of the action takes place in or near the Somerset town of Glastonbury, which is some ten miles north of the village of Montacute. Powys's father, the Reverend Charles Francis Powys (1843–1923), was parish priest of Montacute from 1885 to 1918, and it was here that Powys grew up. The grail legends associated with the town of Glastonbury are of major importance in this novel, and Welsh mythology has, for the first time, a significant role.

Montacute House is a late Elizabethan mansion in Montacute, South Somerset, England. An example of English architecture created during a period that was moving from the medieval Gothic to the more classically-inspired Renaissance style, Montacute is one of the few prodigy houses to have survived almost unchanged from the Elizabethan era. The house has been designated as a Grade I listed building, and its gardens are also listed at the highest grade on the Register of Historic Parks and Gardens of Special Historic Interest in England.

Designed by an unknown architect, possibly the mason William Arnold, the three-storey mansion, constructed of the local Ham Hill stone, was built in about 1598 for Sir Edward Phelips, a lawyer and politician who was Speaker of the House of Commons from 1604 until 1611, and subsequently Master of the Rolls from 1611 until his death in 1614. He was the prosecutor in the trial of the Gunpowder Plotters. Phelips' descendants occupied the house until the early 20th century. For a brief period, the house was let to tenants, one of whom was Lord Curzon, who lived at the house with his mistress, the novelist Elinor Glyn. The house narrowly escaped demolition in the early 20th century, when it was valued for scrap at just under £6,000. In 1931, it was purchased by the philanthropist, Ernest Cook, who presented the house to the National Trust. One of the earliest of the Trust's acquisitions, the house came empty of its contents, and without the endowment the Trust subsequently required, its then secretary, James Lees-Milne describing it as an "empty and rather embarrassing white elephant".