The first person to successfully go over Niagara Falls in a barrel was 63 year old Annie Taylor, a former school teacher who needed money. She died destitute about 20 years later.
From Wikipedia: "On October 24, 1901, 63-year-old Michigan school teacher Annie Edson Taylor was the first person to go over the falls in a barrel as a publicity stunt; she survived, bleeding, but virtually unharmed. Soon after exiting the barrel, she said, "No one ought ever do that again."[36] Prior to Taylor's attempt, on October 19 a domestic cat named Iagara was sent over the Horseshoe Falls in her barrel to test its strength. Contrary to rumours at the time, the cat survived the plunge unharmed and later posed with Taylor in photographs.[37] Since Taylor's historic ride, 14 people have intentionally gone over the falls in or on a device, despite her advice. Some have survived unharmed, but others have drowned or been severely injured. Survivors of such stunts face charges and stiff fines, as it is illegal, on both sides of the border, to attempt to go over the falls."