Why didn't you read the paper? If you had read the paper, you would have seen that the paper has NOTHING to do with the Medieval Warming, so it does NOT provide evidence for your claim. Nor does it say the Little ICE Age was global. It deals with ONE glacier as near to Antarctica as you can get. It even says the other glaciers nearby did NOT show the same behavior.

Next time check your blogger's facts. He flat out lied, and you swallowed it.