or extraordinary". Out of one hundred peers summoned before the King in 1716, five lived in Great Marlborough Street. For a time, Thomas Onslow, 2nd Baron Onslow owned No. 11 while Richard Lumley, 1st Earl of Scarbrough at No. 12. For a time in the 18th century, the street was the main London residence of Lord Nelson. No. 13 was formed of two separate houses, both leased by John Richmond in 1710 and subsequently joined as a single property. It was bought by Lord Charles Cavendish in 1740 and later occupied by his son, the scientist Henry Cavendish. Sir John Cust, 3rd Baronet lived at No. 14 from 1754 to 1762. The Byron family were listed as ratepayers of No. 15 during the early 18th century. William Byron, 4th Baron Byron lived here from 1727 until his death in 1736; his widow remained there until 1740. The Baron's son, William Byron, 5th Baron Byron lived here from 1745 to 1774. The Scottish sculptor Thomas Campbell worked here from 1833 to 1843, also taking over the neighbouring No. 16. Sir Lambert Blackwell, 1st Baronet bought No. 16 in September 1709 and stayed there until his death in 1727. His son, Sir Charles Blackwell, 2nd Baronet subsequently lived in the house until he died in 1741. Mary Lepell, maid of honour to Caroline, Princess of Wales (and future wife of John Hervey, 2nd Baron Hervey) lived in part of a house which is now part of No. 34 from around 1716–1724. Sir John Cust, 3rd Baronet, Speaker of the House of Commons lives in No. 41 (now No. 46) from 1747 to 1752. The first floor of the property was later occupied by the painter Benjamin Haydon from 1808 to 1817; Gilbert Stuart Newton is believed to have taken over his lodgings. The French instrument builder Sébastien Érard moved into No. 18 in 1794. He stayed there until his death in 1831, after which his nephew, Pierre Erard took ownership of it and the adjoining No. 18, and rebuilt the two properties to have a uniform facade. The Pantheon was based at the far eastern end of Great Marlborough Street. It was built on what had previously been gardens in 1772, becoming a popular place of entertainment during the late 18th century. The building burned down in 1792 and was rebuilt; it ceased to be an entertainment venue in 1818. It was