Who was the French tightrope walker famous for repeated crossings above Niagara Falls?

Measure the width of your foot to get an idea. Also remember the wire is not completed taught so it is bouncing up and down with your weight and swaying in wind. Spray from Falls makes it slippery.

I don't know what I'm talking about but 3 inches sounds pretty wide! still, impressive stunts!

how in the hell did he do all that?? Really???