The Film "Braveheart" has it right on some points but does a bad job with historic precision with others, most likely because they're just attempting to dramatize a Hollywood film, not promoting dull precision.

Let's see what info we can learn from history about the real William Wallace. William Wallace was a Scottish knight. In order to comprehend the impact of that time's knight civilization and roles, we will discuss the idea itself. We will also discuss the brutal reign of Edward I of England, the sadistic murder of William Wallace (worse than you might think), and several other factors contributing to his capture, his resistance, and his following.