BR
Even publishers can't harmonize an authors name (nor their own).
Just open the copyright page
(IMHO the official metadata)
Different versions of the author name
Different versions of THEIR name
Even different versions of the SERIES name (also by list)
Add in acquisitions (X now a division of A )
Your problem child is one of the worst for variants (comma before the Jr, No comma, period, no period) I have run accross
The quality check Plugin will
help identify and fix most (but not this one)
Another name issue: 'Brother and Sister Jones' that requires TLC
Brother Jones & Sister Jones