Some context: Anthony Neil Wedgwood Benn (3 April 1925 - 14 March 2014), originally known as Anthony Wedgwood Benn, but later as Tony Benn, was a British politician, writer, and diarist. He was a Member of Parliament (MP) for 47 years between the 1950 and 2001 general elections and a Cabinet minister in the Labour governments of Harold Wilson and James Callaghan in the 1960s and 1970s. Originally a moderate, he was identified as being on the party's hard left from the early 1980s, and was widely seen as a key proponent of democratic socialism within the party. Benn inherited a peerage on his father's death (as 2nd Viscount Stansgate), which prevented his continuing as an MP.
Benn's father had been created Viscount Stansgate in 1942 when Winston Churchill increased the number of Labour peers to aid political work in the House of Lords; at this time, Benn's elder brother Michael was intending to enter the priesthood and had no objections to inheriting a peerage. However, Michael was later killed in an accident while on active service in the Second World War, and this left Benn as the heir to the peerage. He made several unsuccessful attempts to renounce the succession.  In November 1960, Lord Stansgate died. Benn automatically became a peer, preventing him from sitting in the House of Commons. The Speaker of the Commons, Sir Harry Hylton-Foster, did not allow him to deliver a speech from the bar of the House of Commons in April 1961 when the by-election was being called. Continuing to maintain his right to abandon his peerage, Benn fought to retain his seat in a by-election caused by his succession on 4 May 1961. Although he was disqualified from taking his seat, he was re-elected. An election court found that the voters were fully aware that Benn was disqualified, and declared the seat won by the Conservative runner-up, Malcolm St Clair, who was at the time also the heir presumptive to a peerage.  Benn continued his campaign outside Parliament. Within two years, though, the Conservative Government of the time, which had members in the same or similar situation to Benn's (i.e., who were going to receive title, or who had already applied for writs of summons), changed the law. The Peerage Act 1963, allowing lifetime disclaimer of peerages, became law shortly after 6 pm on 31 July 1963. Benn was the first peer to renounce his title, doing so at 6.22 pm that day. St Clair, fulfilling a promise he had made at the time of his election, then accepted the office of Steward of the Manor of Northstead, disqualifying himself from the House (outright resignation not being possible). Benn returned to the Commons after winning a by-election on 20 August 1963.
Why did he automatically become peer?
A: In November 1960, Lord Stansgate died.

Some context: Benjamin Henry Boneval Latrobe (May 1, 1764 - September 3, 1820) was a British subject and neoclassical architect who emigrated to the United States. He was one of the first formally trained, professional architects in the new United States, drawing on influences from his travels in Italy, as well as British and French Neoclassical architects such as Claude Nicolas Ledoux. In his thirties, he emigrated to the new United States and designed the United States Capitol, on "Capitol Hill" in Washington, D.C., as well as the Old Baltimore Cathedral or The Baltimore Basilica, (later renamed the Basilica of the National Shrine of the Assumption of the Blessed Virgin Mary). It is the first Roman Catholic Cathedral constructed in the United States.
Latrobe returned to England in 1784, and was apprenticed to John Smeaton, an engineer known for designing Eddystone Lighthouse. Then in 1787 or 1788, he worked in the office of neoclassical architect Samuel Pepys Cockerell for a brief time. In 1790, Latrobe was appointed Surveyor of the Public Offices in London, and established his own private practice in 1791. Latrobe was commissioned in 1792 to design Hammerwood Park, near East Grinstead in Sussex, his first independent work, and he designed nearby Ashdown House in 1793. Latrobe was involved in construction of the Basingstoke Canal in Surrey, together with engineers John Smeaton and William Jessop. In spring 1793, Latrobe was hired to plan improvements to the River Blackwater from Maldon to Beeleigh, so that the port of Maldon could compete with the Chelmer and Blackwater Navigation, which bypassed the town. The project lasted until early 1795, when Parliament denied approval of his plan. Latrobe had problems getting payment for his work on the project, and faced bankruptcy.  In February 1790, Latrobe married Lydia Sellon, and they lived a busy social life in London. The couple had a daughter (Lydia Sellon Latrobe) and a son (Henry Sellon Boneval Latrobe), before she died giving birth during November 1793. Lydia had inherited her father's wealth, which in turn was to be left to the children through a trust with the children's uncles, but never ended up going to the children. In 1795, Latrobe suffered a breakdown and decided to emigrate to America, departing on November 25 aboard the Eliza.  In America, Latrobe was known for his series of topological and landscape watercolors; the series started with a view of the White Cliffs of the south coast of England viewed from the Eliza. The series was preceded by a watercolor of East Grinstead, dated September 8, 1795.
Did  he build in england?
A:
In spring 1793, Latrobe was hired to plan improvements to the River Blackwater from Maldon to Beeleigh,