No, I am not related via Ellen (Richardson) Workman. My husband's Workman family were Dutch and the name was originally Werkman. I am instead a descendant of Margaret's brother, Robert Burris, who moved to Hardin County, Ohio.
I do not know where James Richarson is buried, but he apparently died 1851-1860. Margaret does not have a gravestone (or at least none presently exists) and there is no gravestone there for James either. Other than knowing James was born ca. 1815 and was a carpenter, I know very little about him. I have always assumed he is somehow related, perhaps a brother, to Samuel Burris' wife, Elender/Ellen/Eleanor Richardson, but no proof.