George Charles Williamson,
1911 Encyclopædia Britannica, Volume 22…
(1911)
“ In the following year he died in Denmark. He was a Huguenot, and was said to possess secret colours in enamel, especially a blue, which were not known to his Petitot relations. His work in England is of great rarity, Lord Dartrey possessing the finest example, and there are two remarkable works in the Pierpont Morgan collection and one at Windsor Castle. Two in the Propert collection have been lost sight of. ”
