Paula,
I don't remember if I replied to this old message, but... I have been extremely busy and my genealogy has taken me to other branches of my family.
Family history is replete with bad spelling. The marriage record of William and Mary Long listed him as "Demry". The children that he had were male Demry's and have produced a large family that spells the name Demry, the way that it is pronouced. The name was also spelled Demery.
I hope that this is enlightening and not old news. I love your efforts.
Bruce