Calvert William (1814-40)
Calvert William, Leeds, Yorks., cm and u (1814–40). At Mill Hill in 1814 and listed at no. 9, 1828–30. By 1837 at Butler's Ct, Kirkgate. [D]
The original entry from Dictionary of English Furniture Makers, 1660-1840 can be found at British History Online.