Authorized Personal Names

For LIS 6210, I just completed the OCLC Connexion Authority File Exercise...but played around a little bit further to look up a couple of my favorite authors who have multiple names: John Irving (John Wallace Blunt, Jr) and J.K. Rowling (Joanne Rowling...born with no middle name).

Irving:
100: Irving, John, $d 1942 --
400: (more in other languages, but no further English versions)

Rowling:
100: Rowling, J.K.
400: Rowling, Joanne K., $q (Joanne Kathleen)
400: Rowling, Jo
400: Scamander, Newt
400: Whisp, Kennilworthy
400: (a few more, but in other languages)
670: J.K. Rowling, c2002, $b p.9 (Joanne Kathleen Rowling; Jo is still the name she likes to be called)