He died years ago, but he was considered the tallest man in the world. I believe that was exaggerated, but I know he wore overalls and could lift heavier objects (e.g. A large rock). He had a lot of facial hair. I think his first name was Silas, but I don't remember.
There was the Giant Silva, but he was not the tallest man in the world. You might be thinking of Giant Gonzalez, but his first name was Jorge. Try those two