Steven, could you clarify what this looks like?
"I prefer to use the citation, delete the http//www. in front of "http://www.findagrave.com" to avoid another error, then use the template."
So you would copy and paste the citation from FAG in the sources section, edit out the www part and then add the template after and insert the memorial number? All in one source entry.
And would that would be the same if you want to embed the entire thing in between <ref> </ref> in the bio?
Is this correct for a FAG for a son attached to a father: <ref>Find A Grave, database and images (accessed 08 August 2018), memorial page for Peter Carrow (Mar 1854–4 Nov 1903), Find A Grave Memorial no. 157739113, citing Walnut Grove Cemetery, Methuen, Essex County, Massachusetts, USA ; Maintained by M K (contributor 46864291) {{FindAGrave|157739113|sameas=no}}</ref>
Where the www part is deleted, the grave memorial inserted into the template. Template follows citation.
I don't mind marking false errors in my own suggestions list, but as a Data Doctor, I might not see the profile again so I'd like to do it correctly using the citation and the template.