I think you're right!
Although, confusingly, the Pottery Gazette refers to the range as 'Canada' in a 1959 article. The advert in McConnell dates somewhere between 1965-71 (does it give a specific date anywhere in the credits? I can't spot it).
Was there a temporary change of name during that period, I wonder? I have packaging pre-65 with 'Canada' and post-71 with the same. Nothing from that middle period, though. Hasty edit:
I lied - I have a boxed set of cordials from the Kastrup-Holmegaard era, also Canada.