David Sykes' parents were: Henry Sykes born 2/12/1757 and Barbara Selsor. Henry was born in Greene Co, PA . HIS father was John Conrad Sykes born in Chester Co, PA.
Salem Township is in Monroe County, Ohio and there is a Sykes Ridge and a Sykes Ridge Cemetery there as well as a Sykes Ridge Christian Church. At least there used to be.
I am going there next summer to do physical research on records that are unavailable any way else, and to take pictures of the cemetery.