In a writer’s case, a nom de plume.
In conversation with writer Ann Swinfen, she tells this story;
‘The fourth writes romance and was dumped by her publisher. She was taken on by another, but only on condition that she write under a nom de plume, with a totally invented biography..’
It prompted me to not just wonder at the odd ethics of the publisher, but to wonder what I might call myself – other than myself. And not just that, what biography I might create for my new persona. Goodness, one could almost write a book about said fictional person!