His second surviving son, Ignatius (1787–1870), built up an extensive practice around Newcastle upon Tyne: he built one of the first railway-bridges in England, at Skerne, near Darlington (1824), and was a competent and prolific designer in many styles. His Burn Hall, Co. Durham (1821–34), was in an advanced French Classical style, while his Romanesque Revival Oxenhope Church, Yorks. (1849), had reasonably authentic detail. His pupil and assistant from 1831 to 1841 was J. L. Pearson. Joseph's youngest son, also Joseph (1796–1878), was a distinguished Egyptologist who became curator of Sir John Soane's Museum: his best works were the Temple Mills, Marshall Street, Leeds (1842), in a scholarly Egyptian Revival style; the Egyptianizing gate-lodges and gates at Abney Park Cemetery, Stoke Newington, London (1840); and the Egyptian Court, Crystal Palace, Sydenham (with Owen Jones), completed 1854.
J. Gosby (1987);
J. Curl (2002a, 2005);
"Bonomi Family." A Dictionary of Architecture and Landscape Architecture. . Encyclopedia.com. (August 16, 2018). http://www.encyclopedia.com/education/dictionaries-thesauruses-pictures-and-press-releases/bonomi-family
"Bonomi Family." A Dictionary of Architecture and Landscape Architecture. . Retrieved August 16, 2018 from Encyclopedia.com: http://www.encyclopedia.com/education/dictionaries-thesauruses-pictures-and-press-releases/bonomi-family