Census of Canada
1911/British Columbia/Comox-Atlin/4 Alberni/page14
June 27, 28, 29, 1911
Port Alberni and Stamp Harbour
Iveson, Stenton
"Mastadon", Boarder/Fireman, single, b. Feb 1877 - England, age 34, immigration 1906
I think the Mastadon was a dredge but would have to do more research to be sure. So Stenton was in Canada before 1911.
"Mastadon" was a 12 wheeler steam locomotive. (Canadian Pacific Railway)