As I said in my introduction to the group, the earliest reference to the name is from the 13th century, when it was written as Kemblock. At this time, Scotland had a fair amount of traffic with Scandinavia, so it IS possible that it came from Sweden. However, as Prof Black, the authority on scottish surnames, isn't willing to commit himself, I'm certainly not going to! It's certainly been around in Scotland as long as many other scottish names.
It's beginning to look, from the research going on, as though most Kemlos can be traced back to NE Scotland, so it would be very useful to know how far back you've managed to trace your family so we can add you to the tree. Lesley Robertson