Artist Equivalence Issues

I’m having a bit of trouble getting Roon to handle the meta data for ‘Billy Thorpe and the Aztecs’ properly. The problem is Roon seems to keep trying to treat different renditions of the name as separate artists, e.g. Billy Thorpe and the Aztecs, Billy Thorpe & The Aztecs, Billy Thorpe And The Aztecs, The Aztecs, etc.

See also, https://en.wikipedia.org/wiki/Billy_Thorpe and
https://en.wikipedia.org/wiki/Billy_Thorpe_and_the_Aztecs

I’ve somehow managed to get it down to:
Billy Thorpe (2 solo albums)
Billy Thorpe and the Aztecs (4 Albums)
Billy Thorpe And The Aztecs (2 Albums)
The Aztecs (1 of the above albums, plus some tracks from Various Artists type compilations). Roon even has an artist bio for this one, but it’s not very good, and the group is rarely referred to as just The Aztecs.

Even though I’ve renamed the album directories and changed the artist meta tags to use ‘Billy Thorpe and the Aztecs’, Roon keeps insisting two of those albums are still by the artist ‘Billy Thorpe And The Aztecs’.

My searches of the Knowledge Base and the forums have not really made it clear to me how this stuff is handled by Roon, and more importantly, how it is resolved.

Any help and guidance would be gratefully received.