Reportedly the mainspring behind the formation of the London & Brazilian Bank c. 1862.
A predecessor firm of Lloyds.
Geoffrey Jones, Banks and money: international and comparative finance in history, pp. 40-1.
Carlos Gabriel Guimaraes 'Banks, economics and power during the second reign: the Sociedade Bancaria Maua, MacGregor & Cia. 1854-1866', http://www.h-net.org/~business/bhcweb/publications/BEHprint/v026n2/p0381-p0392.pdf