From Wikipedia:
"Blondin was born on 24 February 1824 at St Omer, Pas-de-Calais, France.[1][2] His real name was Jean-François Gravelet, and he was known also by the names Charles Blondin, Jean-François Blondin, Chevelier Blondin, or more simply "The Great Blondin". When five years old, he was sent to the École de Gymnase at Lyon and, after six months training as an acrobat, made his first public appearance as "The Little Wonder". His superior skill and grace, as well as the originality of the settings of his acts, made him a popular favourite.
Blondin went to the United States in 1855.[2] He was engaged by William Niblo to perform with the Ravel troupe in New York City and was subsequently part proprietor of a circus.[3] He especially owed his celebrity and fortune to his idea of crossing the Niagara Gorge on a tightrope, 1100 feet (335 m) long, 3¼ inches in diameter, 160 feet (50 m) above the water, near the location of the current Rainbow Bridge. This he accomplished, first on 30 June 1859, a number of times, always with different theatric variations: blindfolded, in a sack, trundling a wheelbarrow, on stilts, carrying a man (his manager, Harry Colcord) on his back, sitting down midway while he cooked and ate an omelet and standing on a chair with only one chair leg on the rope.[4]"
So what's the big deal.