Matthew Brettingham the Younger was an architect active in the 18th century. He was the eldest son of architect, Matthew Brettingham the Elder (born 1699, died 1769) of Norwich, England.
Sources:
Colvin, Howard, A Biographical Dictionary of British Architects 1600-1840, 3rd edition (New Haven and London: Yale University Press, 1995), pp. 157-158.
Riddell, Richard, ‘Brettingham, Matthew, the younger (1725–1803)’, Oxford Dictionary of National Biography (Oxford: Oxford University Press, 2004) <http://www.oxforddnb.com/view/article/3355> [accessed 29 November 2007]