The Indians, who like myths and allegories, have a fine story about it.

They say that Heno, to whom Manitou gave charge of the thunderbolt, once lived in the great cave or hollow behind the falls, liking the damp and the eternal roar of the waters.

And Manitou to help him keep a watch over all the thunderbolts gave him three assistants who have never been named.

Now, the nations of the Hodenosaunee call themselves the grandchildren of Heno, and when they make invocation to him they call him grandfather.
But they hold that Heno is always under the direction of Hawenneyu, the Great Spirit, who I take it is the same in their minds as Manitou.

The more you learn of the Indians, and especially of the Hodenosaunee, Robert, the more you admire the beauty and power of their minds." Willet spoke with great earnestness, his own mind through the experiences of many years being steeped in forest lore and imagery.
Robert, although he knew less of Indian mythology, nevertheless knew enough to feel for it a great admiration.
"I studied the myths of the Greeks and Romans at Albany," he said, "and I don't see that they were very much superior to those of the Indians." "Maybe they weren't superior at all," said Willet, "and I don't believe the Greeks and Romans ever had a country like the one in which we are roaming.