Joseph Bonomi the Elder
He was born Giuseppe Bonomi in Rome on 19 January 1739. He was educated at the Collegio Romano and then studied architecture with Girolamo Teodoli. He made his his early reputation in Rome before moving to London in 1767 at the invitation of Robert and James Adam, who employed him as a draughtsman from 1768. In his early years in England Bonomi also worked as an assistant to Thomas Leverton.
He became a close friend of the painter Angelica Kauffman, whose cousin Rosa Florini he married in 1775. The next year he produced a design for a proposed sacristy for St Peter's in Rome, which may indicate that he visited his native city at around this time. In 1783 Kauffman persuaded Bonomi to move back to Rome, where she was now living. He took his wife his wife and children with him, and the move seems to have been intended to be permanent; however the next year the family returned to London, where Bonomi was to remain based for the rest of his life.
Bonomi's earliest known independent work dates from 1784. After this he quickly became a successful designer of country houses. In 1789, he was elected an Associate of the Royal Academy, and from then on constantly exhibited architectural drawings. Joshua Reynolds, president of the Academy, had wanted Bonomi to become a full Academician, regarding him as a suitable candidate for the vacant chair of perspective; the majority of the Academicians were, however, opposed to this suggestion, and Bonomi became an associate only, and that merely through the president's deciding vote.  Reynolds resigned his presidency in protest, but was soon re-elected.
He died in London on 9 March 1808, aged 69, and was buried in the Marylebone Cemetery.
In 1775 he married Rosa Florini, Angelica Kauffman's cousin. One son Ignatius Bonomi (1787-1870), was also an architect, and another, Joseph Bonomi the Younger (1796-1878), became an eminent sculptor, artist and Egyptologist.
The style adopted by him was the Italian or modernised Roman; and he sought to obtain the characteristic effect appropriate to the object of his design, rather by just proportions and good details than by unnecessary ornamentation and littleness of parts, thus exhibiting his preference for the "Architecturesque" over the "Picturesque."
He took a bold approach to Classical architecture, often breaking its accepted rules by, for instance, omitting the frieze from an entablature, or supporting a portico on an odd number of columns. A favourite innovatory feature was a portico deep enough to form a porte cochère: a shelter for carriages arriving at the house.
Notable works include:
- Dale Park, Madehurst, Sussex (1784). Demolished 1959.
- Parts of Towneley Hall near Burnley in Lancashire.
- Barrells Hall, near Ullenhall, Henley in Arden Warwickshire, home of Lady Luxborough and the Newton family of Glencripesdale Estate, Argyll.
- Gallery at Packington Hall, Great Packington, Warwickshire, for Heneage Finch, Earl of Aylesford.
- St James' Church, Great Packington, Warwickshire (1789-92).
- Saloon for Lady Montagu's house in Portman Square, London (1790). Destroyed 1941
- Eastwell House, Kent, for George Finch Hatton (1793-9).
- Pyramidal mausoleum at Blickling Park, Norfolk in memory of John, second Earl of Buckinghamshire.
- Saloon and staircase at Piercefield House, Monmouthshire.
- Remodelling of Stansted Park, Sussex (with James Wyatt).
- Alterations to Hatchlands Park, near Guildford, Surrey.
- Church of our Lady of the Assumption and St Gregory, Westminster, London (1789–90).
- Laverstoke House, Laverstoke, Hampshire (1798).
- Sections of Lambton Castle, near Washington, County Durham (1798–1802). The castle was further enlarged by Bonomi's son Ignatius.
- Longford Hall, Shropshire.
- Roseneath House, Dunbartonshire, for the Duke of Argyll (1803). Demolished 1961. 
Bonomi is briefly mentioned in Sense and Sensibility. In the novel, Robert Ferrars says to Elinor (perhaps untruthfully) that his friend Lord Courtland had shown him three house designs by Bonomi and asked him to choose between them, but that Robert had burned them and advised Courtland to build a cottage instead.
- "Bonomi, Giuseppe". The American Cyclopædia. 1879.
- Papworth, Wyatt (1869). "Memoir of Joseph Bonomi, Architect and A.R.A.". Papers Read at the Royal Institute of British Architects: 132 et seq.
- Summerson, John (1970). Architecture in England 1530–1830. Pelican History of Art (First paperback ed.). Harmondsworth. p. 466. ISBN 014056103X.
- Chisholm, Hugh, ed. (1911). "Bonomi, Giuseppi". Encyclopædia Britannica 4 (11th ed.). Cambridge University Press.
- According to Papworth: "In 1804 Mr. Bonomi received from the Congregation of Cardinals entrusted with the care of St. Peter's at Rome, an honorary diploma, constituting him architect to that fabric."
- Nairn, Ian; Pevsner, Nikolaus (1965). Sussex. Buildings of England. Harmondsworth: Penguin Books. ISBN 0140710280.
- "Site Record for Rosneath House". Canmore.
- Bryan, Michael (1886). Robert Edmund Graves, ed. Dictionary of Painters and Engravers, Biographical and Critical (Volume I: A-K). London: George Bell and Sons. p. 155.