Hi Gene. I've not posted in a while, so I'll have a go.
The gun appears to have belonged to the Hon. Montague William Tyrwhitt-Drake. He was born in King's Walden, Herefordshire, in 1830. He went into law, and became a solicitor in 1851. He moved to Canada in 1859, and joined the bar in British Columbia in 1873. He eventually became a judge of the BC Supreme Court, in 1889. This explains why the gun turned up in a Canadian auction.
The Drake family is from Shardeloes, Amersham, Buckinghamshire. A full account of the family can be found at:
The Drake FamilyMontague William Tyrwhitt-Drake's crest is recorded as being two crests, with the motto "Vigilandum". The two crests of the Tyrwhitt-Drake family are: "a naked dexter arm erect holding in the hand a battle-axe argent (for Drake); a savage proper, wreathed vert, holding in both hands over his dexter shoulder a club (for Tyrwhitt)".
References:
A List of Canadian Bookplates (1919); Winward Prescott, Ed. Society of Bookplate Bibliophiles, Boston and Toronto.
Fairbairn's Book of Crests of the Families of Great Britain and Ireland (1905), 4th Edition.
Next time, Gene, make it tougher. I like these challenges.