I just imagine some turn of the century French ad executives, wearing coat and tails, with pouffiness, setting around, smoking an Arcadian mix, coming up with ideas for a "line" of pipes for their briar slot and peg fraising machines.
"We will have a line of droopy cones shaped bowls on lazy stems and call them Dublins."
"Oui oui!!"
"And, some big long log shanked pipes and call them Canadians... for them, lumberjacks."
"Oui oui!!"
"And, a stout double cone shaped one, we'll name after those short and stocky Englishmen that walk about like bulldogs."
"Oui oui!!"
"And, those plain old pipes... let eat cake them play billiards."
This wasn't really a time of guys making pipes in their sheds. The names most likely were marketing tags, with designers barely ever setting foot on factory floors.