 They included personalities such as Anatole Demidoff, a Russian prince married to Napoleon's niece, Princess Mathilde Bonaparte, as well as many painters, sculptors and writers, both French and foreign.After the French revolution of 1848, the activity of Maison Fossin slowed significantly in France, leading to the establishment of a boutique in London with a workshop entrusted to Jean-Valentin Morel (1794–1860) assisted by his son Prosper, who was born in 1825.They attracted a prestigious clientele which included Queen Victoria, who granted Jean-Valentin Morel a royal warrant.