In the example given above, both the <ref> and <span> use the same name, "Find A Grave". Using the same name is not required. As an example, when the source is a book, you can use the author's last name in the <ref> statement and leave the <span> empty.
The syntax is now:
<ref>[[#S245|Author]]</ref>
<span id='S245'></span>
This gives a cleaner look to the Source and Footnote sections of the profile, IMHO.