Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 148,369 pages of information and 233,846 images on early companies, their products and the people who designed and built them.
Probably George Frasi.
1846 Advertisement: 'Steam flour mill to be sold: with high pressure, bell crank steam engine, of superior workmanship, made by Frazi of London, from two to three horse power'. At Calcula Steam Mills, Molong 
1857 Advertisement: Sale of eight horse table engine by Frazi: apply J. Whiley, 2 Mansfield Street, Borough Road, Southwark