Is this gun from England?

Hi my name is Cheryl and I am a new collector. My father started me with a puzzle. He left me a Double Barrel Muzzleloader Shotgun. Proof Mark says circa 1811-1892, Proof House is Liege (but says its a British Proof Mark) black powder proof for rifles. Can anyone help me figure out if this is a gun from England. It was brought to Canada by my Grandfather in 1891 when he immagrated from England. Also does anyone know of any other marks a person shoould be looking for.

Check the article in the Technical Articles for Milsurp Collectors and Re-loaders (click here) forum of the Milsurp Knowledge Libraries. .........

Proofhouse's Firearms Codes and Markings (click here)
(Extensive listings of markings and codes found on firearms)

Does that, or any of the links it redirects you to help at all?

Regards,
Badger

Where does it say that it's a British proof mark?

Capital City Of Gunmakers (click here) :confused:

Are you sure it isn't a Belgium manufactured shotgun?

Any pics you can post?

Regards,
Badger

Liege proof marks would be from Belgium