I have never known anyone named “Lorne.”
I can think of a few famous people named Lorne, but they’re all old; the aforemention Lorne Greene, Lorne Michaels, Lorne Calvert, and there’s a writer called Lorne Gunter.
I found a number of online lists purporting to cite the most popular baby names in Canada; none listed Lorne. They had all the same (often horrible) names you usually find on American lists.
I never thought about Lorna, as the OP asked for Lorne. My elder sister is named Lorna.
Lorna, I’d guess, derives not from Lord Lorne but from the wildly popular mid-19th century romantic adventure novel Lorna Doone by R.D. Blackmore. It was a bestseller for decades. I think there’s even a cookie or biscuit named for Lorna Doone.
It’s not in the top one hundred boy’s names in Canada for 2005 babies.
Well, here’s what [Behind the Name](http://www.behind the name.com/) says about the two of them:
So both “Lorna” and “Lorne” might have the same root (Lorne, Scotland), even though “Lorna” was created by Blackmore.
Lorna Doone cookies are good!
I’d agree. Lorna as a woman’s name isn’t unknown here. I’ve never heard of Lorne for a man here though. I don’t think we have any Australian GG-inspired names.
In the OLD days of the NHL, there were a lot of guys named Lorne (including legendary goalie Lorne “Gump” Worsley), but you don’t see it often now.
It must’ve been a generational thing. Ask a young Canadian if he knows any Lornes, and he’s liable to say, “Well… my grandfather” or “One of my great uncles,” but no one he hangs out with.
Checking in and agreeing that Lorne was a popular name maybe 30 years ago. Now, not so much.
I know a LOT of Michaels, Seans, and Christophers, though.
Unfortunately the trend these days is to name kids something bizarre, like Jondaphar or Tristoran or who-knows-what.
My brother-is-law is called Gordie. It’s never struck me as an unusual name. 
I’m putting Lorne on my list of names for the next kid. 
You’ve no doubt heard of Saskatchewan native Gordie Howe. A lot of people haven’t.