Mason Ironstone
Lindisfarne Castle, Northumberland
Masons Ironstone (China Ltd)
Springhill, County Londonderry
G. L. Ashworth & Bros. Ltd
Wallington, Northumberland
Cragside, Northumberland
probably Masons Ironstone (China Ltd)
Saltram, Devon
Rufford Old Hall, Lancashire
Dunster Castle, Somerset
Peckover House, Cambridgeshire
Tyntesfield, North Somerset
Dorneywood House and Gardens, Buckinghamshire
Borrowdale, Cumbria
Rowallane, County Down
Dyrham, Gloucestershire
Lanhydrock, Cornwall
G. M. Mason
Berrington Hall, Herefordshire
Erddig, Wrexham
Ightham Mote, Kent
possibly Mason Ironstone
Calke Abbey, Derbyshire
possibly Masons Ironstone (China Ltd)
Wimpole, Cambridgeshire
Dunham Massey, Cheshire
Fortnum and Mason Limited
Killerton, Devon
Castle Ward, County Down
Scotney Castle, Kent
