Stacey makes a good point. William Wallace's claymore was apparently 100lbs. I've heard he used to just swing it in a big circle and if you got in the way too bad.
I may be wrong, but I believe that people back then were a lot stronger than we are now, simply because they did not have all the conveniences and labour saving devices we have now. They did a lot more physical activity in their day to day lives. As a result they were stronger and fitter (though possibly unhealthier due to the limited medical knowledge).
Anyway, who knows. We weren't there so we don't know, we can only speculate
cxxx[]:::::::::::>
Behold, I see my father and mother.
I see all my dead relatives seated.
I see my master seated in Paradise and Paradise is beautiful and green; with him are men and boy servants.
He calls me. Take me to him.