Would be easy to confirm. If she made it up in childhood I would expect there to be some record of that somewhere.
She claims, "I don't know why", because the name just appeared out of nowhere, apparently. :D
Do you have a reference to that conversation? or was it in the other link? I'd love to see her try to explain why there is no record of that name.
It is in the link from her own website for Robert Galbraith!
@ned she claims that about a lot of the names for things in the potter books as well @freemo @swordgeek @toxomat
That's a big thing with her, is she doesn't think she needs to be able to verify anything, because she has fans that will back her no matter what crazy things she says.
@freemo @ned @toxomat Wikipedia says it was "...a name she took from Robert F. Kennedy, a personal hero, and Ella Galbraith, a name she invented for herself in childhood."
Maybe, maybe not.