What Chris said about sharing information - contact the profile manager. On the other hand, if you are a Wiki member who just posted the message without signing in, you should edit the profile to reflect the information you found on Find A Grave. Being relatively recent, it should be pretty accurate. But if you are a member (or would like to become one, join up!) and research to find data confirming the Find A Grave data.
Hope you become a member if you're not already, this is a great place to hang out and "do" genealogy.