The brothers Dominique (1798–?) and Arnould (c. 1804–?) Roudhloff traveled to London in the 1830s from Mirecourt in Northeastern France. London trade directories show that by 1839, the Roudhloffs were working at 81 Charlotte Street in the Marylebone district, and later moved to number 87 sometime during 1848.
The Roudhloffs soon became Panormo’s biggest rival in London and could boast the young guitar prodigy Giulio Regondi as a devoted client. Regondi had made London his home and famously played duets with another young child star, Catharina Pelzer, later known by her married name, Madame Sidney Pratten. Madame Pratten was the foremost late-Victorian era guitar luminary. From her surviving collection of guitars, it is clear that D. & A. Roudhloff was one of Madame Pratten’s favorite makers.