Argyle Wallace is William Wallace`s uncle.
Argyle raised William and showed him how to use a sword.
Argyle also took William on a journey around the world.
Argyle first shows up after malcolm´s funeral and tells William that he is he´s uncle.
He has a beard and long hair. He also has a scar on his face and he`s blind on his one eye.
The only weapon we see Argyle carry is a sword