... that Kent Brushes have supplied their products (examples pictured) to every British monarch since George IV?
Source: "Kent Brushes, which has its factory and headquarters in Apsley, is a Royal Warrant Holder for the supply of brush-ware to the Royal Household and has been providing brushes to the last nine British monarchs since 1820." from: Preston, Olivia. "Apsley's Kent Brushes wins 'Export Business of the Year' at Chamber of Commerce awards". Hemel Today. Retrieved 10 October 2024. and "In the 1820s, Kent expanded and began making toothbrushes for His Majesty King George IV. These toothbrushes were stamped with the Royal Coat of Arms. Kent Brushes has had the honour of holding a Royal Warrant for nine consecutive serving monarchs." from "Discover the Kent Brushes Heritage". Kent Brushes. Retrieved 10 October 2024.