Tracey - I have a data base #0033 for a Leonard Levi Casner (b1805 PA d1867 Huron Township, Huron Co., OH, buried Richmond Cemetery).
His wife was Mary Ann Bennington (b1805 OH d1877 Huron Township, Huron Co., OH, buried Richmond Cemetery).
I show two children for Leonard Levi and Mary Ann Bennington.
I am showing for this Leonard Levi Casner are Peter Casner (b9-2-1843 OH d10-18-1925 Mt. Pleasant, Isabella Co., MI.He married Catherine Houseman.
The second son was James Hyman Casner (b7-16-1851 OH d2-11-1932 Elm Hall, Gratiat Co., MI).He married Edna G. Stevens and had 13 children.
In your post you say Levi had children names Moses, Jerimiah, Sarah Ann, David, Steven, John and James Hyman.Do you think your James Hyman is the same as the James Hyman mentioned above?Do you have birthdates for any of the other children you have listed.
While I have not verified any of this information other than locating some of the families on census records, I think I have the email of some persons researching this line. Waiting to see your response.