I saw a travelling Shakespeare company that came to our high school in the early 60s with a striking Eskimo dress/set version of Lear.  It was so appropriate to the elemental story and characters of Lear. (though god knows how they withstood wearing furs under lights.)

As years went by, the memory of it stayed with me, though not the names.  I thought it was a travelling company from the Stratford Festival. Maybe 10 years ago, I saw a brief reference to it in Toronto's Alumnae Theatre, in a tribute to Herbert Whittaker, who had designed it (not that I would have known that at the time.)  I was then able to find it on the internet: Canadian Players was the company, and actors included Mervyn Blake and William Hutt.

So, good luck continuing to track down your mystery.