There are many records where this name is spelled in many ways. Also, there are many transcriptions of this name.
Tovary, Tovery, Toberry, Tobery, Tovrea
Lovery, Lowery, Tavery, among others.
I have started listing all other variations of the name at:http://genforum.genealogy.com/tovery/
I am interested in corresponding with anyone researching these names.