Bagster & Son, Richard & Jaspar (1806-1811)
Bagster & Son, Richard & Jaspar
20 Piccadilly, London; upholsterers and tentmakers (1806–1811)
Also recorded at 35 Piccadilly, 1809–11.
Source: DEFM
The original entry from Dictionary of English Furniture Makers, 1660-1840 can be found at British History Online.