Is Roger Barker friend of David Coverdale related to Cindy Barker wife of David Coverdale?

Roger Barker is not publicly known as a friend of David Coverdale, nor is there any widely available information connecting him to Cindy Barker, Coverdale's wife. Cindy Barker, also known as Cindy Coverdale, is a separate individual, and any familial or personal relations between them have not been documented in public sources. Therefore, it is unclear if there is any relationship between them.