Based on: Ed Gein
Is Ed Gein Leatherface? On the cover's review, it's said each character of the family is based on a piece of Gein's personality. He could be the older brother, a weird non-menacing worker that acts a little crazy. Gein also was grave-robber - like it's mentioned on the beggining of the movie, related to the Cannibal family - had furniture made of human bones and skin, about 6 leatherface-type masks (human face and hair) and it's believed he ate human flesh.