Help with maker and date

[Secces77]

Wondering what the makers name and date for this nutmeg grater would be
I am guessing its from around the 1820s but there is no assay mark and I can't work who the maker is.

[AG2012]

Hi,
Richard Lockwood & John Douglas
London 1801.
Regards

[Secces77]

Thanks you that, I could make out the R L but the rest had me stumped.

[dognose]

See: viewtopic.php?f=74&t=25675&p=62102&hilit=lockwood#p62102

and: viewtopic.php?f=74&t=31783&p=113307&hilit=douglas#p113307

Trev.