Lonsdale - there's a good northern (England) name! Lons-dale is how I'd pronounce it. Emphasis on the 'o' the the same in 'long'. I agree 8everything, we do seem to be a bit caught up in pronounciation today!
I'm sorry to have bothered some of you guys with this thread, but it's not easy to find out elsewhere, particularly when it's a brand. I still have some doubts but I personally thought it was as in 'London' rather than in 'long'. It might be debatable until I ring up the company, which I don't think I'm gonna do...