Cover name goes in {authors}.
I do correct minor variations (Initial, no initial) to be consistent across books.
I DO NOT insert names that do not appear on covers. The J K Rowling example
I have a custom column for
Pseudonym 4 
Kovid, is there anyway that a custom column could use the LOOKUP of another (regular) column. This would help consistent name entry between
BTW my use of that custom column has evolved. I now list the editor in the Authors column and put all the contributors in my custom column.
This keep template usage neat