This is taken from Fly Family History by Clarence Michaels.Joyce I think this might the earthquake you asked about.
A TRUE HISTORICAL STORY OF REELFOOT LAKE, TN
This was an event that took place just 60 miles from where our John Richard Fly was born, when he was less than five months old.
It was December 16, 1811, a day that struck awe into the hearts of the Chickasaw Indians.Almost fifteen thousand acres, 14 miles long and 5 miles wide, of their hunting grounds in north west Tennessee.There wan an earthquake; the land dropped and the Mississippi River swept in and their hunting grounds were at the bottom of what is now Reelfoot Lake.
The lake was mothered by an earthquake, but it got it's name from the legend the Indians told to explain its formation.
A brave who walked awkwardly because of a club foot was named Kalopin (Reelfoot) because of his clumsy walk.Because of his deformity he could not persuade any Indian girl to marry him.Desperate, he went to visit the Choctaw and found a beautiful girl,Laughing Eyes, but her father smashed the peace pipe to the ground when Reelfoot asked him to approve their marriage.
Reelfoot had decided to kidnap his beloved, when he had a dream that if he did, the earth would quake and completely engulf his own village.He went away without his bride but later changed his mind and carried her off.As the tom-toms beat out the wedding rhythms, the earth began to sway in time to the drums; the ground suddenly opened up, the Mississippi River rushed in, and according to the story, Reelfoot and his intended bride now lie at the bottom of the lake which carries his name.