1823 Edinburgh, but which maker is WM?

[chanson]

Could someone help me identify this maker for a piece of what seems to me to be 1823 Edinburgh silver. I found information about a William Mill, but his WM lacks the crown (?) on the top.

http://www.xs4all.nl/~rdchav/DSCF1561.JPG
(admin edit - images too large!)
Thank you all very much!

[Granmaa]

It looks like William Mortimer's mark (Jackson's p.554). What item was this mark from, and could we see a picture of it?

Miles

[chanson]

Here it is.

http://www.xs4all.nl/~rdchav/1823.jpg

[georgiansilver]

The item is a fish slice and looks in great condition. Nice item. Best wishes, Mike.

[chanson]

Are we agreed that it is William Mortimer? If so, does anyone have any further information on him? Thanks again!